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Showing content with the highest reputation since 04/23/2018 in all areas

  1. 12 points
    This is a project by a group of community members which was also involved in the Mark2 dual extrusion upgrade. More precisely, it's me coming up with an outside the box approach / weird idea for a certain unresolved problem. Smart people like @gr5, @Anders Olsson, @Dim3nsioneer, @rooiejoris throwing in ideas and @tinkergnome who implants the stuff into firmware. My impression of the current state of development when I started this was as follows. There have been filament monitor projects since the beginning of reprap. Only very few made it to some kind of product state, like the one by Aaron Tunell. Manufacturers like Prusa and others recently introduced some kind of filament monitors, with mixed success / reliability issues. The Duet3D guys set their hardware research (laser-based and rotating) on hold because they were experiencing inaccuracies of +/-20%. Well and then there was Ultimaker ... until yesterday with the S5 All these efforts have been or still are struggling to fulfill the most important objective: NO FALSE ALERTS. Otherwise any filament sensor would quickly render itself useless. What we want to achieve Objectives, the obvious part: zero false alerts detect filament runout ("nothing there") detect filament grinding ("nothing/very little moves") Objectives, the challenging part: detect first layer issues (see video below) detect when real flow leaves a certain safe process window and starts to compromise part quality (first, inter layer adhesion will suffer, then classical under extrusion will be visible) and try to counteract, that's where the real fun starts ... Current state of development We chose an encoder and there's a reliably working prototype for an easy to attach external flow sensor, mounted to the entry side of the feeder. Resolution is in the range of 0.015 mm. It's integrated in Tinkerware with a dedicated menu and we (well, he) implemented a gcode command: M591 T0 S1 E0.5000 L0.01695 R35:130 A0.3 P100.00 I leave the parameter interpretation as a little quiz here. Right now I'm working on a modified design which, besides the encoder, doesn't need some parts which cannot be printed and are in the +30€ range to have them manufactured. But most likely some parts will still not be FFF printable. How can I get this? First give us some more time to test and evaluate. If everything works like intended we might proceed like with the Mark2 project. If we should offer this as a product I'd expect a price tag between 70-100 €. And the UM3? That's the BIG question. Like @Daid recently stated their main market is already different. And indeed, has anyone seen any kind of (hardware) upgrade for the UM3 so far? Feeders are the same, mechanically our sensor fits. Electronics, not sure. Ultimaker originally wanted to use a serial interface on the UM3. For the UM2+ we simply connect the sensor's quadrature output signal to free I/O pins, there are enough left (4) for two sensors for a Mark2 dual extrusion UM2. Ultimaker won't do anything to support a sensor on the UM3. Anyway, if a large number of UM3 users would show interest, they might at least not impede a development ...
  2. 7 points

    Version 1.0.0


    Here is my full size Velociraptor skeleton. Juste made for the challenge. Lenght: ~180cm Sculpted with Zbrush. Total printing time: ~392h. Printer: Ultimaker2+ Filament: PLA Speed: 30mm/s - 50mm/s Nozzle: 0,4mm Layers: 0,15mm Painting : acrylic paint (spray and brushe)
  3. 5 points
    First, thank @foehnsturm ( and all ) for this development work, now we will never be blind again I print 1/2 kg parts every day and have always wondered "why is the weight lighter than the weight in the slicer ? " Here is a simple test of several printed samples ( the same ones ) that I weighed. In Red: without retractions In blue: with retractions Carbon/PETG Composite Nozzle 0.4 mm Bondtech QR This under-extrusion is a combination of several factors : - viscosity - shear rate - Fourier heat exchange - motor torque and more..... I think it would be interesting to view the sensor information via USB --> curve graph. I can't wait to use this sensor
  4. 5 points
    Took the bed files from Cura 3.3, to visualize the size difference of the 3 and the 5
  5. 5 points
    It's bigger. 330x245x315mm to be exact. And that volume can be used by BOTH nozzles. No more less volume for dual extrusion prints. It has a flow sensor, that works for jam detection as well. Yes, we spend a shitload of time developing this one. It has been in development even during the UM3 development. As we wanted in the UM3 initially, but we cut it from the release then when it didn't work properly. Solves the 750g spool problem. I think we've gone trough 2 different sensor chip designs, and a whole bunch of mechanical designs before that part was perfect. Then the software when trough a few large iterations as well. This was quite a ride. Touch screen, better late then never. Doors, just improves print quality, especially with high temp materials. But we all already knew this. Expansion port. Next to the spool holder NFC connector there is a mystery connector. Future extension devices can be connected to this. Cannot tell you what we have in the works for this. But hey, the connector is there. Aluminium buildplate. Not all materials where sticking very well to the glass. A proper aluminium build plate works better for some materials. (Available later) Double the theoretical resolution on X/Y by changing the belt pulley sizes. With the heavier construction, this also gave us the plus of having more torque. Internal power supply. No longer the separate power brick. New improved bed, which is stiffer then anything we did before. Grid based leveling. With the large build volume, our 3 point leveling no longer worked properly, as glass and aluminium plates are always a bit warped. (I think this will be backported to the UM3 as well, but don't hold me on that one) It uses the same PrintCores as the UM3, why change something that works great? One thing got removed compared to the UM3, the frame lights are now only white, no longer RGBW. (The RGBW strips are quite expensive in the UM3, and never really used, which I personally think is a shame, but hey, you win some, you lose some)
  6. 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 03 TOLERANCES AND SNUG FIT Now that we know we will be printing in scale 1:400, would be good to be able to use one site for all 4 previous versions. To print in scale 1:400 we need to alter the site, for that a simple edit in place of the floor slab we just did will do, or even easier, make a section box. To print in the specified scale, we need to know how much will that translate to in scale 1:1 , also take into consideration the printing size - 180x180mm for the UM3 dual extrusion mode on. All is left to do is introduce the factors in an online scale converter – or if you are up for it, old school math. This being said, I will make sure the section box will be adjusted to box 72 x 72 m. Tip for this action is to work in parallel with the plan and the 3D view. So how much is that in cura? As a percentage? We will export again in these settings, and as said in the cura tips&tricks section, you will see that if you use the xtl exporter and you set it in meters as export settings you will need a 250% scale up. But this topic is about snug fit, for a snug fit you need to allow a tolerance offset, just like in reality. In the case of 3D printing it is between 0.3 and 0.5 - a skill you will learn to master by experience, trial and error. For this exercise I will use a 0.3 offset in scale 1:400. As you footprint might remain the same, and your design will probably change specially in concept stage, begin by offsetting from your border line. The result will look something like this: However, you are not done yet, I generally recommend that the bottom is not let empty, but also as a part of the site, for that we will do another floor to cover the area under the proposed model. In my case, it so happens that the new floor is placed under Level 1, and Level 1 is my zero floor, which works for me. If the scenarios would have been different I would have just offset the new floor in a + or – direction from the Revit Properties menu bar. This is a section from Alternative 1 – you might want to check all alternatives just to make sure you don't need any extra information input. I have noticed that the sides of my new cut-out are at level 0, therefore an adjustment is needed as well on the edges. Same routine as when you did the sloped floor – Modify sub elements – and add the desired point height. The new result will look something like this: So now you are ready to export the site and each option individually. The site will be exported from Main Model, in meters as units. The same will be done with all the design options, one way to export any Revit element individually, for 3D printing is to Isolate Element in view. Once your model looks like this, you are rready to export. Repeat the same rpoceedure for all elements. However in the case of option 4 we have extra space between the volumes, you might want to fill in those extra gaps now. Place the new floor components also in Design option 4. Don't forget to adjust the height and also to place the offset mentioned before. Isolate the elements in view and again, export them separately from the rest. 3D PRINTED RESULT: NEXT ON THIS SERIES: 04 ENTOURAGE FILES FOR DOWNLOAD: site.stl alternativ 3-4.stl alternativ 2-4.stl alternativ 1-3.stl alternativ 4-3.stl alternativ 4 - extra site.stl site.stl
  7. 4 points
    This is a fractal I cobbled up and made it into a giant hollow shape to light up. I have not made the dolphins yet that are part of it. It is made to be lit internally. The red base will hold the electronics inside and will run Fibre optics through all sorts of parts with different colors. That will be interesting as I have to find the right color combo, but one thing at a time..... The base will not be red when finished. The first photo is regular lighting, after that backlit to show the translucency of material. Thing filled the build plate....Size is my enemy....:(
  8. 4 points
    C'est ce que j'ai fais ;)
  9. 4 points
    No, I don't know the sensor on the S5 in detail so far. I was talking about our own project. But I don't want to hijack this topic so I'm going to start an extra thread soon.
  10. 4 points
    I know this is a bold statement But our sensor had zero false alerts so far, by design it will always touch the filament. Now I want to see if we can achieve an accuracy of +/- 2% for 1mm of filament. The 1 mm is because rotary encoder resolutions are limited, we are in the range of 60 steps/mm now. So far 85-95% real flow seem to be the regime for good prints. Flow below 85% compromises layer adhesion, below 75% you will see the classic under extrusion pattern.
  11. 4 points
    As for the flow sensor. We (the Mark2 crowd ) almost finished development for an external flow sensor for the UM2+ including firmware integration. Mechanically it fits to the UM3, but connecting to electronics and ofc firmware integration is a different story ...
  12. 4 points
    OK...I am, and always have been a fervent admirer of Carl Casper, Tom Daniels, George Barris, etc. All those funny car guys and trikes and motorcycles they hopped up in the bygone days. I actually have a full collection of their models and such. As such, I kitbashed an idea or two before. And in the computer, designed (mostly finished) a 'funny trike' to try and do something with. So, until I lost interest (No way at that time to make it real) I had most of it completed complete with a V8 Engine, Loooong exhaust pipes with a funky sound maker (glass packs I think they called it) in the mufflers and monster wheels with disc brakes, etc. While a lot more of it has been built (But, not made printable), this is all I have printed so far. It is big. And the danged things would not fit all at once on the build plate. So I had to split them up. I have not cleaned the prints. These are raw. So, that also means I have not epoxied anything together yet. These are raw with no clean up on them. Wheels on buildplate with Aldo Socks holding key parts. Wheel halves with mounting supports for body and cutaway for tire/brake works. Disc Brakes and feeder lines. Ok...maybe feeder is not the right term to be using, but I have no idea what to call them. Hoses maybe? Outside of wheel. Layer hell...why? Put together. Just not epoxied yet. Long view I think I may let the imperfections on the wheel knobs stay as it looks like the way tires do look with bits of rubber sprigs poking out. Would like to get rid of the layering though....that bugs me. Engine on Buildplate with Aldo Socks securing vertical print. It just printed best this way for some reason, but also would not fit unless I broke it up in a much more obvious way, or broke out the exhaust pipes and manifolds. so, this printed really nice I think.....For some reason, not so layerish like the wheels got. Turbo charged V8 Engine. Fan Blades could use a bit of work though...... Back of engine. Amazed it held the spark plug wires Front of Engine. Can really see how yucky the fan blades are on these two images. Side view of how the completed engine and exhaust should be. Long view......
  13. 3 points
    Ultimaker Cura 3.3 is available from today! Following the news from yesterday, a large part of the news relates back to the Ultimaker S5. Among others Cura can now also create a UFP. UFP (Ultimaker format package) is a new file extension that contains compressed gcode and a preview thumbnail. Using this extension enables a model preview (similar to the solid view in Ultimaker Cura) on the Ultimaker S5 touchscreen and in Cura Connect. Since we also introduced a new material, 'Tough PLA' yesterday, the material profile can now also be found in the latest Cura version. Tough PLA prints as easy as regular PLA, except it is as strong as ABS. Which means if you are looking for strong prints it is definitely a material worth exploring. The prints with the same temperatures as PLA, which implies it is equally heat resistant. Besides aligning Cura with the recent expansion of our product range, we have also added some new features. Ultimaker Cura is now equipped with a 3D model assistant. The 3D model assistant triggers when you want to slice with ABS, PC, PP or CPE+ and can give you tips on how to potentially improve the quality and reliability of your 3D print. - More good news is that you can now also easily do single extrusion prints, when your model allows it. Using single extrusion mode also makes the ‘print one at a time’ feature available for the Ultimaker 3 and Ultimaker S5. You can easily disable it by right clicking on extruder 2 and enable/disable it from there. - The prime tower has now been made round instead of square, which should result in a smoother toolpath and a sturdier prime tower. - Support blocker also made it into the stable version. @ahoeben , thanks again! You can now generate a cube mesh to prevent support material to be used in certain areas within a model. Each cube can be scaled, rotated, and moved with the standard adjustment tools in the left side of your screen. - Bridging. Many thanks to @smartavionics . It is still a fairly new feature, but it allows Cura to check for bridges and opens up more configurations to tweak for better briding. Finally; three new plugins have been added; Scalable extra prime, Print temperature offset, and Enclosure fan. I've mentioned some already, but I want to thank everyone for there help in realizing Ultimaker Cura 3.3. We couldn't do it without you! I'm talking about @ahoeben , @smartavionics , @thopiekar , Pheneeny, krios-fabteam, dagoma3d, uBuild-3D, maukcc, timur-tabi, pouncingiguana, velbn, and Gordo3di. Can't wait? Download Ultimaker Cura 3.3 here! Not entirely convinced yet? You can read more about these features and more on our blog! Looking forward hearing from you, and make sure to share your feedback with us. That is the only way we can continue improving on this wonderful slicer!
  14. 3 points
    I know our material / processing team and I'm not surprised to hear about the stringent tests. We have super high quality demands.
  15. 3 points
    Ah, you got that wrong. ColorFabb buys their raw materials from these companies. Or in a car analogy, ColorFabb is your local car shop+repair, these companies are the car manufacturers. (Does not go up entirely, but shows the difference in operation scale) These material companies are the type where you ask for a sample of material, and they ask how many metric tons of pellets you want, not a few kg, tons. They make the plastics themselves, not the filament, the knowledge they have is huge. (Most likely the production chain is something like, Oil->Shell->DSM->ColorFabb->Ultimaker3->3D-Print, but I could be slightly wrong here)
  16. 2 points
    Hi everybody! I don't own a ultimaker printer but I do use Cura. I originally started as just a kid playing with 3D applications like Google skethup. But with the recent purchase of my Duplicator I3, I have been able to take my skills further and explore the world of robotics. I designed my first 14 hour print yesterday in response to a design flaw in my first print. I am currently trying to make a 2 wheel remote control vehicle. I've gotten most of the electronics figured out, so all that is left is to print the chassis. Just want to say that it's awesome to finally have found a community of other printers!
  17. 2 points
    I have updated the plugin for Cura 3.3 I have submitted the plugin to be available through the plugin browser, but if you are impatient you can download it here: http://files.fieldofview.com/temp/v4/PrepareStageCompactor.curaplugin
  18. 2 points
    La carte electronique aussi est bien améliorée, et elle possède les nouveaux drivers TMC machin chose (les mêmes que la prusa mk3), du coup elle est ultra silencieuse). Sérieusement c'est une bonne machine, après j'avoue que le prix est chaud mais c'est encore plus dirigé vers les sociétés et les pros que l'UM3 donc ça a du sens. Par rapport au prix il ne faut pas juste voir les composants il y a aussi toute la r&d derrière, et l'équipe de dev etc...
  19. 2 points
    The actual difference is even bigger since they left room for the switch mechanism to not occupy print area
  20. 2 points
    Je viens de m'apercevoir qu'il avaient aussi fait une petite modification sur le feeder pour le débrailler plus facilement.
  21. 2 points
    Hi Low price leader has never been UM's place in the market. There have always been ( and always will be ) lower purchase price options. The only way they will continue to justify their market position is by continuing to deliver printers that do a better job. That's not to say this or that print is better under a microscope than some other print. How much do I have to fiddle to get this or that done? What sort of up time do I get on the printer? If there is a problem, what sort of support is there? How close to an "end to end" solution is it ? ( = does the software vendor point at the hardware vendor and vice versa while nothing comes out right?). Indeed with enough time invested I can make just about any POS printer turn out a part. That may or may not be a good use of my time. If it is, I'll buy something cheap. If I need to put a lot of stuff through the printer for weeks and months on end, getting less than 60 hours a week on good prints may not make any sense. Are there other good vendors out there? Sure there are. I have yet to find a good one who is also cheap ..... Bob
  22. 2 points
    We didn't get a real launch this time :( Sigh... Multiple things really. First off, the bed is way bigger. That does little for the price, but it does mean that we needed a way better power supply (+-200 watt to 500+ ish). As the brick we shipped with the UM2/3 was already the biggest we could find, and we were pushing that one to its limit. So the only way to solve that was to integrate the power supply, which in turn means a ton of extra development (Making the supply, getting it approved for CE & FCC, you name it). We also needed to really beef up the rods / bearings that we use for the carriage system. There is also a bit more actual casing material (but I doubt that will do that much). The flow sensors, screen, and improved stepper drivers also add to the price. So all in all, it's not that weird of a price increase. It's not like we just made it bigger and started asking a way higher margin. Nope. It uses (max) 40 points to level. It does take longer (duh), but it also grealy improves first layer adhesion.
  23. 2 points
    RIght now? You slice it for either UM3 familiy or for the S5. The profiles (due to head weight / size) are different, so mixing them will get you poor quality results. We did improve the whole flow for Cura & mixed connect setups. So if you have a mixed cluster, you can switch between the printers pretty fast from Cura. It also detects what configurations are on what machines. As to how I would personally want it; I'd love it for connect to be able to re-slice models. That way you can just throw a curaproject file to the queue and depending on what's available, the models can be resliced (while trying to remain as close as possible to the original intents you put in there). But yeah, future dreaming!
  24. 2 points
    Quelques informations glanées sur le forum à propos de la S5 Elle a un volume réel de 330x245x315mm pour être exact et ce volume peut être utilisé par les deux buses, y compris en double extrusion Il a un capteur de débit dont le développement a commencé pour l'UM3 mais de trop nombreux problème ont repoussé sa sortie. Il y a un écran tactile. Les portes sont la pour améliorer la qualité d'impression des filaments haute température. Il y a un port d'extension qui est prêt à recevoir une extension dont on ne sait pas grand chose pour le moment.... Il y aura plus tard un plateau en aluminium pour faciliter l'adhérence de certains matériaux. La résolution est doublée (en théorie) par l'utilisation de poulies plus grandes au niveau des axes, ce qui procure également plus de couple. L'alimentation est interne. Lit amélioré (alu moulé) Nivellement automatique non plus sur 3 points mais sur une grille pour optimiser la gestion de la déformation des plateaux. PrintCores de l'UM3 (en 0.25, 0.4 et 0.8 mm)
  25. 2 points
    As an aside to the people overlooking this site....that 'download file' should alert you that you are not downloading the actual printing file, but pics.
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