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Showing content with the highest reputation since 05/04/2018 in all areas

  1. 13 points
    How can the very latest, cutting-edge design software combine with a 5,000 year old manufacturing technique to deliver outstanding weight reduction opportunities? Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts upon the energy usage of the product during it’s service life. Lighter products mean less fuel to move them around, which can make our fossil fuel reserves go further, or make more efficient use of the renewable energies that we’re now beginning to adopt. Generative Design (GD) is the very latest design software released by Autodesk and is now included in Fusion 360, which is at the heart of their "Future of Making Things" strategy for Design and Manufacturing. It changes the way we design things and can deliver very efficient designs that deliver structural performance with optimised use of material. The aerospace industry is expected to be one of the early adopters of this technology because in that industry the cost and environmental savings from improved fuel efficiency carry the greatest rewards. Also, I see interest from the automotive industry for the same fuel efficiency reasons, but in the long term the drive for lighter weight parts could benefit many industries, even those outside of transportation. Another example of the benefits of lighter weight alongside reduced material usage is that shipping costs for parts reduce as their weight reduces, which can therefore also deliver cost efficiencies. GD is targeted initially at metal parts where the biggest opportunity for light-weighting exists. The complex forms it generates though often means that parts conceived in this way cannot be made with conventional manufacturing routes. They therefore need to use Additive Manufacturing (AM) techniques to produce them. The route of using high energy, laser-based AM to do this comes with associated high costs because of the specialised set-up knowledge required together with expensive processing, and post processing, to deliver a quality-assured part. This project explores the possibility of a more cost-effective route to a metal GD part which, even though at this stage may be just used for a small quantity of evaluation prototypes, can act as an enabler for understanding the potential that GD has to offer. This is the baseline design for this project. It is an aluminium bracket design similar to those used in aerospace applications to mount control surfaces, and in this form has not been optimised for weight. This design would weigh 383 grams in the intended material, aluminium A356. After processing this through Generative Design in Fusion 360 it’s time to review and evaluate the many alternative design options presented and decide upon the design that is considered the most appropriate taking into the other factors that have an influence on design selection such as manufacturability, aesthetics etc. This was the design option chosen for this part and Fusion 360 was used to create the final version of the model. The bio-mimicry that’s evident in most of the designs created by GD is interesting to see, in this case the design of the part can be seen as essentially a swept I-beam (which engineers, especially those in construction, are taught is a strong section), but with tendon-like attachments back to the mounting points to carry the tensile loading that’s created by the applied loading conditions What GD does is to turn the standard design workflow that we’re familiar with on it’s head. Traditionally we design a part and then stress test it virtually to determine if it fulfils the required structural performance. Any failures seen during this process require an iterative loop back to the design to correct them. With GD the stress analysis is a core part of the design synthesis, and happens as the part design iterates, which means that the output at the end should meet the requirements of the intended loading requirements. The software is searching for an optimal solution where the stress is ideally evenly distributed across the part as can be seen above. To prove that everything is good with the finalised design this part has then been virtually tested again in Fusion 360 to confirm that the original loading requirements are still met So we've created our lightweight part design, and maybe now we need to produce that in aluminium A356 to do some physical testing, but don’t want the expense of using a metal AM process. What follows is a way of achieving this where FDM 3D printing can play a role as an “enabler” to help create the final parts in conjunction with a very old (if not ancient) manufacturing technique called investment casting. This technique is 5,000 years old according to Wikipedia. The company involved with casting this project is Sylatech who have been using Ultimaker 3D printers as part of their process for investment casting of prototype parts Sylatech took the .stl file of this model and used it to create a 3D print of the part on an Ultimaker 3 in PLA. This PLA part was then used as the pattern in the investment casting process where it is submerged in plaster under vacuum conditions to ensure that all air is excluded from the mould and creates an accurate reproduction of the surfaces of the part. The picture below shows a display box which demonstrates the set up of the 3D printed parts partially encased in plaster. Once the plaster has hardened the casting box is put into a furnace at very high temperature in order to burn out the PLA, leaving behind a cavity into which molten aluminium can be cast. After solidification of the metal, and cooling of the mould, the plaster is broken away from the parts, and then they can be quickly and easily removed from the material feed gate resulting in these aluminium A356 versions of the PLA original. The final part weighs 122 grams which is a weight saving of 68% over the original baseline part, which shows the potential that GD has to make significant reductions in weight and material usage. Using this method we now we have an excellent quality physical part made very quickly in the final intended material in order to commence some physical testing.This is a different route to get to that physical test part in metal at a fraction of the cost of having it metal additively manufactured. It also shows how a brand new, cutting edge piece of software that only became available in May 2018 can combine with FDM 3D printing (which many people still see as a new technology even though it’s been around for over 20 years) and a 5,000 year old manufacturing technique to deliver potentially huge benefits in weight and material usage. Using the investment casting route in this case study is why I chose the title for this article, and shows that we can effectively go “Back To (Deliver) The Future”. Do you see the need for lighter weight parts in what you do, and can you see the potential benefits of using Generative Design and this method of producing metal parts? I'd welcome comments, suggestions, and discussion about any aspects of the above article, the next steps that I'm looking at are how this process could scale up to batch production of the parts using 3D printing techniques that could support low volume production quantities
  2. 10 points
    Hello! You may have heard stories about glass plate having one side which brings you slightly better adhesion compared to the other side, or perhaps you have experienced this first hand yourself. Allow me to provide you with some background information and some instructions to figure out which side you should be printing on and which side you should use if you want to add an adhesion sheet. The difference is first introduced during production. When our glass plates are being made, near the end of the production line there is a hardening process. During the hardening process, the plates float on a layer of tin and are heated from above. This creates a difference between the two sides. There are two main factors that ensure good adhesion to the glass plate: wetting and flatness. Wetting is the ability of a liquid to maintain contact with a solid surface. Lower surface tension means better wetting. The non-tin side (i.e. upside during the hardening process) has a lower surface tension than the tin side. Therefore the non-tin side is recommended to print on. If the sticker that is on your glass plate fell off, you can do a simple small test to identify which side is which by placing a drop of water on both sides of the glass. (Not at the same time though). The non-tin side, the side you want to be printing on, is hydrophilic and the water disperses. On the tin side, the water will form a droplet (this side is hydrophobic). If you want to use an adhesion sheet, it is recommended to stick it to this side. Hope this helps! Let me know below if you have any further questions!
  3. 10 points
    Took me forever to do this. And it is still rougher than I would have liked. 3D concept rendering: Finished piece:
  4. 6 points

    Version 1.0


    The original dodecahedral kinetic sculpture by Stijn van der Linden a.k.a. Virtox. Made of five nested dodecahedra, each one is limited to rotate around its own axis. It was printed with dual extrusion on an Ultimaker 3 with water-soluble PVA support material.
  5. 6 points
  6. 6 points

    Version 1.0


    During my spell working in the Art department on 'Avengers Age of Ultron' I was asked by the production designer to build a prop to help dress the interior set of 'Stark Towers' The model was to show the new section of tower that replaced the damaged section from the original film. As I only had 4 weeks to build it (including 3d modelling) we needed to simplify the design a bit, hence the lower portion being in laser cut acrylic. Using my trusty Ultimakers I think I pulled off the desired effect, even if it only appeared in the movie for less than a second!
  7. 6 points
    Hi, I have created this thread to keep an overview on which materials are available through Cura as part of our Material Alliance. We can add a short description of each material so you have at least a basic idea of its properties. Do realize this is a summary, if you want to know specific properties please visit each filament specific technical data sheet. I'll also include a link to each individual thread, in case you want to discuss a material specifically. Questions? Feel free to post them below! This thread will be updated over time. BASF - PET CF. Carbon fiber, high dimensional stability, low moisture absorption, heat-resistant of 74ºC - PP GF30 . Glass fiber (30%), extreme stiffness, chemical resistance. Clariant - Clariant PA6/66 FR. Flame retardant. - Clariant PA6/66 GF20 FR . Glass Fiber (20%), flame retardant. - Clariant Pet-G. Chemical resistance, good layer adhesion, heat-resistant ~80ºC. Colorfabb - Color On Demand, PLA in 100+ RAL colors at 2kg MOQ. - woodFill , 70% PLA and 30% wood provides a wood-like texture DSM - Arnitel ID 2045 . ShoreD 34 hardness, flexible TPC. - Arnitel ID 2060 HT . High performance TPC, high temperature, chemical resistance. - Novamid ID1030 CF10 PA6/66. Carbon fibers (10%). Dupont - Zytel 3D1000FL. Ultralow shrinkage. - Hytrel 3D41000FL, shoreD 60 hardness. Eastman - Amphora AM3300. Low-odor, styrene-free material. ElogioAM - Facilan C8 . 3D print almost without layers, good interlayer bonding. Igus GmbH - Iglidur I150 . Self-lubricating, wear resistant. - Iglidur I180. Self-lubricating, wear resistant. Lehvoss - Luvocom 3F PAHT 9825 NT. Unreinforced PAHT, low warping. Matterhackers - NylonG . Glass fiber (~20%). - NylonX. Carbon fiber (~20%). Owens Corning - XSTRAND GF30 PP . Glass fiber (30%). - XSTRAND GF30 PA6 . Glass fiber (30%).
  8. 5 points
    The Cura team is now working on fixing a couple of bugs related with the error checker and the Z Hop Speed for the Creality 3D printers. We found the problem and we plan to release a hotfix ASAP. Keep you informed. Thanks for all the feedback.
  9. 5 points
    There are 400+ people working for Ultimaker. There is no way that everyone can know what is happening at any given moment. So yeah, I do work for Ultimaker, but that doesn't mean that I can give answers about everything that's going on at any given moment. I understand that people are frustrated about it, but there is also no need to start lashing out at anyone working for UM that is responding to things in this topic. I'm trying to help in what limited way I can. Not because I have to (because hey, it's not my job), but because I feel that it's important to do so. Let's turn it around a bit; I'm seeing a lot of frustrated people. But due to me not working on the right project, there is little I can do about it. What I can do is respond at some of the other remarks that were being made. Upon doing so I suddenly get attack for doing that. What kind of message do you think that gives off? If that happened to you, would you feel that it matters that you're trying to help? I doubt it. So yeah. I do respond a bit cranky if my genuine attempts to at least do something get annoyed responses. It frustrates me that what little I can do about this issue isn't going to fix it. I also get that your frustration is even worse because there is even less that you guys can do about the problem and for that, I'm really sorry. There just is no more information than "We're working on it as best we can". I know that's not a satisfactory answer because quite often this is used as a "shut up and leave us alone" response to get people to stop complaining. But it's the best answer I can give because it's the truth. We are working on it, it is something that a lot of people (myself included, even though it isn't my problem) feel strongly / responsible about.
  10. 5 points
    ...in the meantime here is a censored bust, just in case anyone was offended, re-touched sculpted scan data and I had no photos of the back so I just left it plain, and chopped the arms of for statue effect. For the life of me this one just wouldn't polish anymore than this I spend ages and loads of compound and cloths to no avail, the copper grain was just too coarse to smoothly polish (a result of a too high current!). It was also a sign to say goodbye to my solution and a highlight that surface quality massively impacts the ability to plate and the final outcome....which actually turned out ok, I wish I could post a few more models which turned out great but they are extremely graphic close ups so theres no way and too many eyebrows would be raised!!.
  11. 4 points
    So, after a week or so learning the ins and outs of the S5, I finally pulled the trigger (pressed the button) on my first 24 hour print. It's intended to be a Christmas lamp, and will soon be filled with lights/a bulb. I'll post another pic when it's finnished Modelled in siemens NX and printed at 0.2 with Inofil pro1 white fillament. (tough PLA)
  12. 4 points
    true. I bet he made a lot of people very happy without even knowing! in the meantime i've been repeating my nonsense from yesterday. I was fiddling around with my 'quick' sculpt. and only now i realise im going in circles, and now ive ended up on an old version, because all my new ones looked weird, its annoying. i've filmed me making this from a sphere as usual. but ive lost the history now so cant go back. im just gonna print this rough version and see how it looks.... ....I just remembered the very first thing i printed that i made was a sphere as i couldn't sculpt back then, and it didn't look good, but i felt it was possible....somehow, thats what got me so interested 4 years ago...
  13. 4 points
    Ultimaker Cura 3.5 is ready and its waiting for you! It comes with new features, bug fixes and UX improvements. As always you can download it for free from our website, whether you run Windows, MacOS or Linux. So what does Ultimaker Cura 3.5 have in stock for you? A few of the highlights: Prime tower reliability The prime tower has been subjective to quite some changes and improvements over the last period of time. We strive to make it as space and time efficient as possible while also making it more reliable (i.e., less prone to tipping over). In our latest improvement, a prime tower has 2 sets of walls. The outer wall which is printed by extruder 1 which functions as a purge bin for extruder 2. This makes the prime tower more reliable because there is less layer bonding between different materials. Improved overhang wall processing When overhang walls are detected, they're printed with varying speed and perimeters will not start on an overhang wall. This should result in higher quality overhang surfaces. Material preferences When you often use a similar set of materials, you can now set them as favorites and save yourself some time! They can be quickly accessed in the material selection. Custom support. Inspired by, and similar to the support blocker you can now also create custom support with Ultimaker Cura 3.5. It works just like the blocker, select the area on your model where you want to add custom support using (small) blocks, and voila. Ultimaker Cura settings guide. Very excited about this new guide. In the toolbox you can find a new plugin called 'Cura settings guide'. When it opens you can find all features in Cura and a more descriptive explanation about what it does and how it works. Most of the times accompanied by a visual example. But there is more! User Experience - Hotkeys; quickly toggle through model manipulation tools (generally on your left) using hotkeys. - File menu; 'Save' now saves projects, and 'export' saves models as other file types. - 3MF project files; it's time to say goodbye to '.curaproject' types. Project files now use a 3MF extension instead. - 'Open recent' is added to the menu now too. - Monitor page; not just Cura but also Cura Connect has been updated. The print jobs interface has been improved so there would be less switching between tabs. Slicing enhancements - Initial layer support line distance, users can now configure the density of the first layer of support structures. Allowing you to reduce or increase adhesion to the buildplate and overal strength. - Fan speed override; with this new setting the fan speed can be modified on bridged areas where support is used. Note: this only works when support is enabled. Bug fixes For better stability and performance, we have fixed a variety of bugs in this release. Including excess M109 commands in GCODE, unnecessary travel movements, extra skin wall count, the order of printed models, and many more. For a full rundown of bug fixes, please view the release notes. Last but not least, a big thank you to @smartavionics, @ahoeben, @bagel-orb, Kriechi, MarmaladeForMeat and Cubiq. You are vital to the development and progress of Ultimaker Cura. Also a thank you to everyone who helped us beta test Ultimaker Cura 3.5 Beta. Without you, we wouldn't be able to release the stable version today. Convinced? Download Ultimaker Cura 3.5 right here. Need more information? Here is our blog and here are the release notes. Please let us know what you think below! ?
  14. 4 points
    Hi Folks, I hope you enjoy evaluating the new gyroid infill pattern, it's very fashionable, right now. Just a quick word to alert you that because the infill pattern is, essentially, a mutating sine wave, it is possible to induce resonance in your printer when printing large areas of gyroid infill if the frequency of the head movement matches the resonant frequency of your printer. So, please observe the print head when you print a large area of gyroid infill the first time and if it is moving side to side more than you would expect, slow the print down to stop the print head thrashing around. When I observed it happening, a 10% speed reduction was all that was necessary to stop the resonance. Reducing the density of the infill will also reduce the frequency.
  15. 4 points
    The only reason for us to use boron carbide is that we want to absorb neutrons and boron (the 10 isotope) has very good properties for this. Boron Carbide is a chemically stable reasonably priced ceramic powder with high boron content (four boron atoms and one carbon atom). While a softer material with high boron content would have been preferable, there are no such options in a reasonable price range. Other uses is for example as a grinding powder, which explains why it eats 3D printer nozzles ? That is the basic reason behind the Olsson block and the Olsson Ruby nozzle, summed up in a few sentences ? If you are interested in further reading, we have published much of our work in an open access article: http://iopscience.iop.org/article/10.1088/1402-4896/aa694e (Check out the Supplementary Data too for information about the Olsson block and other stuff) There is currently no commercial production of boron carbide filament but there might be in the future. Be ware though, if you even come across it, that boron carbide is one of few materials which is harder than ruby, so it will slowly wear the ruby.
  16. 4 points
    I am Stefania Dinea, an architect who mixes 3D printing, VR, parametric design and blogging daily and I will share some of my 3D printing tips & tricks with you. This series is my overview about the process and my work-around. Please feel free to comment and add. PREVIOUS POST: THE ARCHITECTURE OF 3D PRINTING - 01 TOPOGRAPHY THE ARCHITECTURE OF 3D PRINTING - 02 MASSING THE ARCHITECTURE OF 3D PRINTING - 03 TOLERANCES AND SNUG FIT THE ARCHITECTURE OF 3D PRINTING - 04 ENTOURAGE THE ARCHITECTURE OF 3D PRINTING - 05 HIGH RESOLUTION BUILDING FACADES THE ARCHITECTURE OF 3D PRINTING - 06 INTERIOR DESIGN THE ARCHITECTURE OF 3D PRINTING - 07 STL EXPORT FROM REVIT THE ARCHITECTURE OF 3D PRINTING - 08 OPTIMIZE BUILD VOLUME 09 MATERIAL PROFILES In this section I am going to share some of my favorite tips&tricks. It took me over two years to learn that the best material for a printer is the one wearing the manufacturers logo, therefore the best material for an Ultimaker is Ultimaker material. Not only that, but Ultimaker has been nice enough not only to incorporate their own material settings into cura but also some generic settings that may include materials that are not necessarily apart of the Ultimaker family. This scenario allows you to focus on your goal – fast prototyping your idea and not spend to much time and energy on custom settings. However if you are a tinker – cura and the ultimaker machine will allow you to push your imagination into reality – with enough custom settings to break new boundaries. To conclude, when in doubt – go with what works! When handling materials, especially new ones, I do strongly recommend beginning with the recommended settings already found in cura. However, in Architecture I found it most useful to also restrict the type of materials to new adventurers in the field of 3D printing to PLA and PVA (If an UM 3 or higher is available). Personally, I think a UM2 still adds a lot of value to the education side, because it forces a different type of mentality, one that is design altering. Another thing that I like to custom make in cura is tailor my materials, to also include the price, therefore getting a material cost/printed piece and also include the producer and the supplier, so I always know which materials I use with what. First, you begin by downloading the technical data sheet of the material: These are the very useful information such as weight, and also ability to figure out the density of your filament. So, to create a custom new material, you go to Manage Printers> Materials>Create Using the information I already have, it is easy to fill in the info (in this example the cost is fictive) And the result looks something like this: As you can see, when you tweak your materials there are some benefits, not only accurately calculating how much time it needs to complete a job, or how much material, but also it helps prove the point that 3D printing is affordable in terms of material cost. Here are also my general all purpose printing settings (I only use this on UM machines and only when I use PLA) Layer height - 0.2 therefore top bottom thickness should be a multiply of this 0.2*6=1.2 Nozzle 0.4 so wall thickness should be a multiple of that 0.4*3=1.2 I have noticed I can take up the printing speed to 100 mm/s in cases of extreme urgency, which is almost always. I do not prefer to print with brim, but I always want to start my print with a skirt. Till next time. //S
  17. 4 points
    Yeah, I was about to! Our final decision was to turn the current check box in the Preference window into a text box where you can fill in a formatting string, similar to media tagging software. It's not all that hard to use but covers everyone's use cases.
  18. 4 points
    It's a spot where wear and tear can occur on the lever if the filament isn't quite sitting straight on the bearing; it's not super common but we've seen a few cases. I just put the label on the box actually about 5 minutes ago, and you should have the part in a day or two, with tracking information in your email. There's also an update on your support ticket with assembly instructions for installing it in your feeder.
  19. 3 points
    Now available is a Linux AppImage that runs on an armhf system (e.g. a Pi 4). It has received minimal testing but it does appear to work (I sliced a benchy OK!). Obviously, even the amazing Pi 4 is still quite limited compared to most laptops, etc. so don't expect stellar performance but it is surprisingly usable. I think it exceeded my expectation. It is highly recommend that you have 4GB of memory and a CPU fan! Known limitations are that currently the layer view only works in compatibility mode and that the UI QML is slow due to lack of JIT support. If you try it out, please post feedback on this thread or open an issue at https://github.com/smartavionics/Cura/issues. You can find the release at https://www.dropbox.com/sh/s43vqzmi4d2bqe2/AAADdYdSu9iwcKa0Knqgurm4a?dl=0. Remember, all my builds are provided with no warranty whatsoever. That said, I try to fix issues where I can.
  20. 3 points
    The sidebar plugin will always have to be updated for new versions of Cura. It "patches" specific parts of Cura, and when Cura is changed those patches don't work anymore and have to be redone. I do think there are still good reasons to prefer the sidebar implementation over the floating panels, so I will release an updated version of the plugin at some point, but there are some complicating factors at the moment.
  21. 3 points
    Ha, I see what you did there with the blog post title...
  22. 3 points
    En dessinant le remplissage dans la modélisation de l'éprouvette... et en imprimant sans remplissage.
  23. 3 points
    On an (almost) unrelated topic, Here is a photo of four Chainmaille crosses that I designed and created in 12 gauge wire rings. Les
  24. 3 points
    yay! It was a pain to hold the fabric. my clips are either too big or too small. 😞
  25. 3 points
    What @Steverc1572 and @PatK say together just about describes an issue. I'm guessing it's the same issue. PSA: please be a bit more descriptive when reporting something. What did you do (step-by-step), what did you think would happen, and what happened instead. Especially that step-by-step description is often important to be able to reproduce a bug. A bug that cannot be reproduced often can not be fixed. Finally, it is very helpful if you mention what printer type you added in Cura.
  26. 3 points
    And a blue They Live v2 dude, I've now donated to a new home. Ammonia.....still eating away. This is an old one not sure if I already posted pics, but seeing as I don't have it anymore...
  27. 3 points
    I kind of understand why he is thinking scaling with pin points will be logical, since he's from CAD/CAM tool background. And many CAD/CAM tool can just send jobs to hardware right away without problems. Starting with curves, sketches and restraints, and export them into paths. It's all logical in that sense, when it's Parametric modeling. What he might not understand is 3D printers and slicers have to deal with Non-Parametric modeling. Scaling in Parametric modeling world can be easy since they work with constraints and paths, but once a model is converted into STL they became static. What he is asking for is that CURA might hv to allow user to pin-point and select vertices on a model to make scaling accordingly... which can be a nightmare and might require a whole new engine and the whole workflow needed to be reimagined. The mechanics of a 3D printer might be similar to a CNC but no it's not the same thing. I also work with similar projects where i have to export joints and pegs in different sizes and clearances. I use variables in e.g. Fusion360 to make constraints work for models in different sizes and export them separately. Eventually I use scripts to automate that, and I still prefer to keep the resizing/exporting and printing procedures separated, rather than trying to use the same file and print different sizes. It wouldn't be a good way to manage files and bad for the workflow.
  28. 3 points
    The intellectual property laws differ a bit from country to country, and they are very complex. There is *copyright* which automatically makes the creator of any original piece of art the intellectual owner. Then there are *protected models*, in which a company can protect its brands and models. And then there are *patents*, which can protect new technical equipment and manufacturing methods. Copyright is automatic and free, patents and protected models have to be applied for and paid for. Generally: - If you make an original piece of art (=something new, it doesn't exist yet), you automatically get the copyright to it. No one else can sell it without your permission. - Often but not always, the law allows you to make a copy for personal home use only, of a copyrighted work of someone else. This differs a lot from country to country, and also depends on the type of art. - Small portions of a work can often be copied as citations, and for scientific and educational use. In case of discussions, the judge will have to decide if this was fair use or plagiarism. - Generally, it is forbidden to copy and sell anything (or even give it away or put it on public display), unless you have written permission from the copyright holder. - In addition to copyright, commercial models are usually protected as "deposited models" too. - You can not copyright ideas, laws of nature, etc. So it have to be exact, concrete materialised models, texts, music, paintings,... So, you can not make a verbatim copy of an art statue and sell that. But you could make a totally new statue that is vaguely inspired by the existing one. You can not copy and sell existing movie characters like Donald Duck, even not in different poses that are not in the films or in their shops. Big companies like Disney make sure that all their characters are deposited models. You can not sell a verbatim transcription of a speech given by a professor in class. But you can write down the contents *in your own words* and sell that. However, if the data from the professor were indispensible for your text, thus you couldn't have written it without his input, then again the professor automatically becomes co-author of the text, and you need his permission to sell it. Or you can not copy and sell existing models like a Chevrolet Corvette. You need a written permission and license from General Motors to do so. But you could design a new sports car that has some vague similarities to a Corvette, let's say a coke-bottle shaped body. Some people make a verbatim copy and then modify only a tiny little part, to sell it as their own creation. This is not allowed. On the opposite side, some big companies try to suppress anything that even vaguely resembles any of their characters or models, which is not allowed either. So you can not copy a Dart Vader costume and sell that. But you can design a new space suit that has some vague similarities. If you do, it is always a good idea to make sure the thing is inspired by multiple different sources, and you put a lot of your own creativity into it. And document it and keep the intermediate steps, especially if you want to sell it. I am not a specialist or lawyer, but I read a bit on this subject. It is all quite complex, with lots of exceptions and vague borders. So in case of discussions, which are likely if you have a big commercial success, the judges will have to decide. And the one with the most money or patience usually wins... So I suggest that you google a bit on the subject. For those who speak Dutch, the Belgian government has a good website on intellectual property. At least, they had. It is now in the process of being renewed, so I don't know what will come out of it.
  29. 3 points
    Well for those interested theres not much difference in detail in dousing the object in acetone other than you get more spots for longer than a quick brush. But thats about it, i guess i must not have covered the bottom of this other one above all that well. The issue with over brushing is that after you have brushed off the additives in the PLA PHA then there is less smoothing material left behind because you have essentially washed it off/out. If you over acetone it could split due to drying out. But I must say since using the s5 I have not had one model split on me regardless of how much acetone I used. It must be the fact that on my UM2 I was printing so low that some layers had simply not bonded as well as I had thought.....Oh well some nicer photos, had to be done. The one on the left has been brushed on for a whole minute as i didn't have enough acetone to dunk it! and the one on the right is just a quick wax on and job done. I finally need to buy some more...Id say 1 litres of acetone lasts me about a year. Thats good value!
  30. 3 points
    This is exactly the way Cura handles it right now.
  31. 3 points
    And my first real agisoft scan and print. I spent a few hours cleaning this up but didnt really need to. Only one lace was messed up and the logos. The rest was cosmetic. And a the sole is simplified because i lost interest as it was only a test.... Cute Airmax 95, my left one. Heard some weird grinding sounds from the head during this one so glad to see it came out ok!
  32. 3 points
    I agreed with Dim3nsioneer in terms of diagnose and disabled the jet setting. I also set "SeamCornerPreference" to "Hide or Expose" as Nicolinux suggested just to be sure. I just printed it and the problem has been solved! Thank you guys.
  33. 3 points
    It's not normal behavior for all printers. It's easy to get rid of those bulging corners. The UM3 default settings are designed to make the print prettier but not as accurate. The first thing to do to help is turn off acceleration control and jerk control. This will give you more ringing but less bulging corners because the printer won't pause so long on the corners. The next thing to do is to lower your print speed closer to the corner speed. The corner speed if it's a right angle and jerk control is off will be 14mm/sec. If you print at 14mm/sec you will have perfect corners but even at 30mm/sec they will be much better. 20mm/sec is the slowest I ever go even when I want perfect corners. The whole reason why this works is that there is a spring effect in the bowden system and when the print head slows down (and the feeder slows down also), the pressure at the nozzle takes longer to equalize so it overextrudes when it slows down and underextrudes (briefly) when it speeds up again. For this reason I also like to set ALL my printing speeds identical. I don't want areas out of tolerance just because it slowed down after printing infill. Everything is a tradeoff. The default settings get you good results with reasonable speed but you can always tweak things to be 2X more accurate or 2X faster than default settings.
  34. 3 points
    Improved set of people: I was not really happy with my previous set: it was too monotonous and just not good enough. But at that moment I had run out of time and out of inspiration... So here is an improved set, with more people, more variation, and in which the people are more alive. Now there are around 35 people in total, men, women and kids. And no more duplicates, although some people still have similarities since they are derived from each other, as it goes in families. :-) This set supercedes the old one. I also corrected a few details that did not come out well in the first set, e.g. hats and shoes. The philosophy is of course the same as in my previous post. STL-file: humanoid10.stl ZIP-file (hope it uploads well):cardboardian_people.zip The set is now printing and looks good so far. First layers are already done. Printing parameters: 25mm/s, 195°C, 0.1mm layer height, colorFabb PLA/PHA, my salt method for bonding (you can see the traces of salt and the shadows they cast). Keep in mind that most of these people are only between 15 and 18mm high. They should blend in well with the cars from the previous contest, and with typical vegetation in architectural models. The zip-file contains the same STL-file, a few JPG-images, and also the native DesignSpark Mechanical files (=the program in which I created the set; freeware). It also contains a few intermediate versions: if you want to edit the set, these might be easier than the final version, depending on what you want to do. Still missing from the set: people sitting, watching TV, reading, laying down, sleeping, using their handy,... But these are not the most easy to design and print recognisably at scale 1:100. Maybe I will add them later, maybe not. Feel free to edit and improve the set, and to add people or accessories as you see fit. You can use it for any purpose you want, also commercially. But if you redistribute the set, or your derivation of it, you have to keep it free (Creative Commons CC-BY-SA license); you can not take that freedom away. Also, feel free to borrow the concept, and design your own sets according to this philosophy. I hope the set is useful. If yes, I would welcome a few pictures of architectural models which features these people. PS: due to limited internet-access during the holidays, it may take a few days or weeks before I see any replies and comments. Have patience... :-)
  35. 3 points
    4gb of RAM? That's barely running your operating system (and thus the low windows score)
  36. 3 points
    @ReggieCarey Cura shouldn't be slow - it has worked very well for the last year or so. The main thing that causes it to be slow is that it's looking on your computer for removable drives. If you go to finder and try to disable/unmount all removable drives (for example don't connect your mac to your phone or to a USB stick, network drives,etc) it would be informative if that helps. Also some people have had trouble with antivirus software. Also try disconnecting from the network. If any of these things suddenly makes it work fine then that's a clue where the problem is. I'm not saying you will have to disconnect from the network forever - just that this may help isolate your issue.
  37. 3 points
    It was about rolling stock. G scale locomotive in progress. Last picture , bogie frame.
  38. 3 points
    I find it hard to keep track of my multiple 3d printers. I would like to be able to also use all of my profiles and machine settings on multiple computers so I am not limited to a single computer.
  39. 2 points
    Hello. Recently, I bought a Duet3d ethernet for my JennyPrinter3D (Ultimaker 2+ extended clone). I decided to change the original board, which was rubbish, for this one. It looks great and the webpanel is incredible. I am trying to configure the new board with reprap configurator but it is a little bit complicated. Could anyone share their parameters? It would be very helpfull. @Neotko I saw your video of Duet Connection in Youtube. It was very useful (me fue muy útil y está todo muy bien explicado). Regards!
  40. 2 points
    My understanding is that there are many grades of aluminum but only MIC6 grade is flat and stays flat. But after you heat it and cool it for months it starts to warp. Worse than the glass. ALSO the aluminum wasn't for PLA or most other materials - only a few of the new materials work better on aluminum. I could be wrong about these things - I'm really not an expert. Ultimaker doesn't like to release something unless it works very very well and consistently. I think they have learned their lesson about announcing things early.
  41. 2 points
    Gr5 Not to be argumentative and yet; it is “highly” probable and very likely that the percentage of owners/end users and businesses active on this forum is a token percentage; who knows; maybe it’s 0.1% which would equal 100% based on your sampling. Furthermore; I personally speak with a couple USA distributors that without reservation share that they too have the same trouble getting element of urgency support as such attempt as able to satisfy the customer in house. Having shared this; I too feel that the Ultimaker Team is far less connected to the end user, particularly when there is an issue than they want all to believe.
  42. 2 points
    +1 to the sidebar creator. The original UI was perfect in it's simplicity and functionality IMHO. The new one seems to be different for the sake of being different, and takes away space. This sidebar plugin is fantastic!
  43. 2 points
    Amazing 🙂 Have you used a special fabric? I think it must be very thin?
  44. 2 points
    Yep, that worked great! Combing Not in Skin, this is Fast Mode, BTW.
  45. 2 points
    Hey Everyone! I just signed up to community forum, and this is my submission! I designed 6 different railway vehicles with various technical drawings that I've found on internet. Each one is based on a specific railway vehicle. There are: Paris, France Siemens Avanto Portland, USA -If I'm not mistaken- Skoda Astra Double Ended Kuala Lumpur Putra, Malesia Bombardier Advanced Rapid Transit Marseille, France Bombardier Flexity Outlook New York City, USA Bombardier Former IRT Lines Toronto, USA Bombardier To give a proper credit, whole Info is taken from: GeoCities Zip File Includes: Each Vehicle in Separate Folders In each folder: Vehicle's .3DM file (Rhinoceros 5) Vehicle's .stl files as VehicleName_Whole and Vehiclename_PartX (X is Part Number) Vehicle Renderings as example; Laid on side, Exploded and Whole Reference .JPEG file My aim on these designs was to simplify each design as much as possible and make them all clearly different at the same time. There were few rules that I had whilst drawing such as all windows and door must be voids. Also, some of them require a drop of glue to assemble, whilst some are assemblable without glue. If you have a printer with large printbed, you can also print it as a whole! I hope you all will enjoy them, and best luck for all participants! If there are any questions or ideas, feel free to contact me! Railway_Entourage_Set.zip
  46. 2 points
    Oh that is funny. Just under a million years ago, when we programmers wore pocket protectors for real and not ironic value, and used punched cards, debugging code was a life threatening emergency. Sleep became elusive. Coffee became a measurable component of blood. The term we used back then when a program finally ran without the tape drives (remember them) stalling or the card reader spitting up was 'algorasm'. I would say this is a cycle, but more like a spiral upwards..... J
  47. 2 points
    Before I left work on Friday, I started a 50+hr print of a prototype part I am working on. I spent a lot of time updating all my settings since I was using MH Pro filaments and I really wanted this thing to be a good show piece. So Monday morning I roll into work to find this: After writing up a very long post in the HELP section, I started listing all my settings just in case someone noticed something out of place. But no worries, I found the problem: For some odd reason, I unchecked the retraction button. A facepalm moment if ever there was one... (the PVA is a bit old, hence the underextrusion you see towards the end of the print)
  48. 2 points
    Hi everyone, After some evaluating and reconsidering of the user levels I've decided to make a few changes. Members who have a post count of 500 posts or more are automatically labeled as 'ambassadors'. This will change into 'Experts'. I've found that the title 'ambassador' implies a certain relation to the Ultimaker brand, which a simple metric as post count does not always ensure. I think it is safer to say that everyone who has been around long enough to reach 500+ posts has (developed) a certain level of expertise though. It also matches our community identity better; 'Ultimaker Community of 3D printing experts'. Doesn't mean you won't see any ambassadors anymore. On the contrary. However, this won't be the result of an automatic process anymore. Every year or so Ultimaker has organized an Ultimaker Community event where we invited community members from all over the world who made significant contributions (one way or another) to our community. We do this as a token of gratitude for their efforts, it also allowed them to get to know the company first hand, and allowed us to get to know our users personally. Moving forward the community members who have made such significant contributions to our community and, if possible - met us, will still be recognizable with the beautiful title 'Ambassador'. If anyone has any questions about this feel free to get in touch with me!
  49. 2 points
    It depends also on your print speed which you do not mention. Your optimum temp. will depend on your printer, your filament, the colour of your filament. And your optimum temp. could easily vary by 5 degrees either way from my optimum. My definition of optimum is the coolest temp. I can print at without under extrusion or any negative impact on the surface quality. With .3mm layers and a .4mmm nozzle at 30mm/s I would be in the region of 195-200 depending on filament
  50. 2 points

    Version 1.0


    Make a design table lamp electronically controlled. Change the shape of the lamp and light intensity according to your mood. Ready for 3D print - microcontroller Arduino - stepper motor - Joystick control. Full story on http://www.3lobitprint.cz/en/flola.html
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