Nicolinux

Nope, my digital caliper is too blunt to measure the tip. I'll have to come up with something else. Maybe I can find a wire with an ideal diameter, measure it and see if I can carefully insert it into the nozzle.

Hi guys, gr5: Interesting idea indeed. I tried to take some closeups of the nozzle but the iPhone 5 camera faild badly. I'll clear the nozzle and will measure the tip with a digital caliper. @Aaron: You are right, 0.35 would be a huge deviation at this scale.

Just for reference. Here are the filament bits. The one on the left was ground down. Oh and hat tip to Sigi. He had suggested to move the knurled bolt mantle down.

Hey Sigi, thanks. Checked that too. But most of my filament seems to have an average diameter of 2.9mm. Usually I unroll the spool a bit, then measure the diameter in different places. I always measure only one side of the filament (not the one that is bent, because this would mess up the measurement).

Another update. I repeated the extruder pulling force test (http://umforum.ultimaker.com/index.php?/topic/4222-pulling-force-of-um-extruder/?p=36719). The extruder is alright. It can pull 5.7kg. @Sigi: Thanks again for the hint. After moving the knurled bolt mantle a bit down so that it aligns with the filament, it made a huge difference. I still have the underextrusion problem, but at least I can rule out the extruder as the source now.

Hi, I have repeated the test again. This time with a proper digital scale. Another thing I changed was the knurled bolt. I noticed that it didn't align with the passing filament so I moved it a bit down the shaft, closer to the stepper). This made a BIG difference. The extruder can now pull 5.7kg! (<5% variance). I have repeated the test at different extrusion speeds (in Pronterface/Printrun). When extruding too fast it would grind filament at some point. @gr5: it was a smart idea to extrude slowly at 50mm/min. I used the same filament and the same tools (except for the digital scale). Also didn't touch the extruder current.

I don't have an UM1 any more. Just wondered why Ultimaker didn't consider to add it to the UM2.

Daid, if you are working on the next version don't forget to add microtransactions, achievements and hats! <- very important.

I was struggling quite a bit with the same problem. I have settled for these two packages: 1. DesignSpark Mechanical This is the free version of SpaceClaim (a well known CAD software - also used by Ultimaker). According to Daid there aren't many features missing compared to SpaceClaim. The catch - it is Windows only :( http://www.designspark.com/eng/page/mechanical 2. Moments of Inspiration This software has a quirky interface and introduces some UI paradigms, but it is really well thought out. I think it is more geared towards the creative designer. It is cross platform and costs around 300$. http://moi3d.com/ I am using both, but I like MoI way better.

Here is a direct link to the video:

I wonder why Ultimaker didn't add something more sophisticated than the "level with paper" assistent. If this cheap 3D printer can do it properly (watch the video(s)), how come that a printer nearly 7 times pricier can't? (link)

Thanks. I will keep an eye on it _after_ I swap the teflon piece

Hey Maik, to attach pictures follow these "easy" but numerous steps: 1. Click on the dropdown with your name at the top. 2. Select "My Gallery". 3. Click on the blue "Upload" button (top right). 4. Click on "Select album" 5. Select your album (provided you have one, but I guess it'll ask you to create one if you haven't). 6. Click on the blue "Choose Files..." button and select your files. 7. Click on "Review and publish". 8. Check the orientation of your images and click on the tiny bent arrow beneath a thumbnail to rotate it in place. 9. Click on finish or save (can't remember - should be obvious). 10. Return to your post (or if you have done this in another tab), click on the "My Media" button at the top of your editor window (when your write a post). 11. Select "Gallery Images" on the left. 12. Select the images you want to add in place (just one click adds a text bit to your post representing the image). 13. Click on finished (bottom right). phew!

Yep, my heart always jumps when I identify something I can improve at home and need to build it. Here I hacked an ominous ceiling outlet to power my beamer. And I had to cover that ugly thing up. Created the "cup" in Moments of Inspiration in a few minutes (and this means something for a CAD noob). Btw. MoI is great, I think I am in love :wub: Or these little guys. I had to re-route a toslink cable across the living room and noticed that I could wedge it between the floor and the wooden strip. And I needed something unobtrusive to hold the cable in place. Then started mass-production of these little guys (I think I printed 50 of them with clear PLA). Here in Germany we have a big hardware store called Hornbach. They run a great ad campaign featuring real men doing hard work. I feel a bit like these guys when creating my _own_ tools (they have the slogan "make it your own project". The words on the wall mean something like: "Words alone won't get the work done").

Hi guys, Got a delivery from Ultimaker today but I it was the wrong part :/ Got this (1310 Hot End Isolator): But was expecting the teflon coupler for the UM2: @Sander: Could you take care of it? If possible please add the grub screw to the next delivery (if it is not already on the way). Also, where can I send the worng part back? Thanks. Stefan

Thanks for the warning... I wanted to try XT for sometime.

Hey Sander, I know you guys must be giving this idea some thought. But if you need an example for a company that already implements it well, look at Unity3D. They have an are on their site dedicated to evangelism (http://evangelism.unity3d.com/).

I was thinking about something more automatic. Load a huge .stl file - like 2m x 2m, tell it your max build size and let it chop down the model and save a bunch of .stl files.

I very much hope so! Still - I want to use a digital scale because I don't trust the cheap analog one. I'll see if I can borrow something from my friends.

Hi, I don't know if I have asked before, but this sure would be handy. Like when you have a huge model you want to print and would like to split it in different parts (that just fit your build area). Would be a nice addition to Meshmixer it think The only thing I have found ist Netfabb Pro (grrrr, only have the basic version) (http://wiki.netfabb.com/Split_Large_STL_file).

I do, but I'll wait for the new digital scale first. Yet since Amazon changed the delivery date to mid february I don't know if I can wait so long

Wait, forgot to say. I didn't increase the current. Just moved the knurled bolt mantle and printed the extrusion test. Makes it even weirder right? One possible explanation could be that the filament guide inside the extruder is bent or ground up for some reason. And now that the knurled bolt pushes the filament with full force, it does apply even more pressure on the (hopefully) broken teflon coupler.

Ran the extrusion test again. This time I heard the skipping right from the start. And it started to underextruder at 3mm^3/s. I don't even.. I decided to stop tinkering and put the UM2 in its hapy corner until the parts arrive.

Wow, what a service. I have many of them, but they are too long. If it is not too much trouble to pop some in an envelope - then yes. Many thanks Sander!

Tried it and failed. Even with a dremel - the outer surface wasn't clean enough.