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Everything posted by thalassa

  1. A week after I got my UM3E, I managed to do this to a nozzle (with UM PLA): -- -- -- -- You can see what happened. Is there any hope for saving this nozzle, or should I just order another one?
  2. Version 1.0


    Campylodiscus hibernicus is a single-celled freshwater algae in the diatom family. It makes a glass frustule (shell), which is printed here. I started with an STL file kindly shared by Jamie Perrelet from http://www.fractalteapot.com/. I imported the file into Meshmixer to generate supports, which were printed in PVA. This type of object is best printed on an SLA printer, but the Ultimaker handled it pretty well. I'll try to tweak the orientation and print it again.
  3. I'm so frustrated with my UM3+ today! Printer worked fine yesterday for a 7.5 hour print in UM nylon. I tried the same print 3 times today in the same material, but at "fine" quality setting. All three failed at the beginning with the filament failing to stick to the plate. Before the third attempt I cleaned the plate and put on a new layer of glue. I also did an active leveling of the plate. I thought maybe nozzle 1 was getting clogged, so I put in a new AA print head and loaded UM PLA to calibrate the new head (1). The XY calibration has now failed three times. The PVA isn't sticking to the
  4. Congrats on your UM3! We received our UM3+ a few weeks ago, and aside from a ton of trouble today, it's been performing well. I've been printing this test piece at normal and fine quality in different UM filaments: http://www.thingiverse.com/thing:1363023 It's a great test. Also very revealing was the overhang test: http://www.thingiverse.com/thing:1564848. So far, my UM3+ isn't performing very well at all on that one. I'm not impressed so far with the PLA/PVA dual prints. The PVA doesn't stick well to the PLA, so some overhangs aren't any better than not using any support at all. Plus,
  5. That bin looks perfect, but of course it doesn't look like they offer that size on the US website. I'll keep looking! Hard to imagine needing to store more than 20 spools, but I'll order two if I can find them. And, a hygrometer! Now you're speaking my language ("librarian"). We use them to track temperature and humidity in our library spaces - I absolutely love the idea of extending our measurements to my filament bins!
  6. Perfect! I even have some of this at home that I can bring in to work tomorrow. That's why I LOVE these forums! Thank you so much for taking the time to respond. Super helpful! <3
  7. For the record, all my sh*t was deeply offended by your comment @SyntaxTerror Ha ha! Glad you took it okay... ;-) Thanks very much for the recommendations. I definitely missed a few of those in my shopping spree to get supplies. I did manage to buy 2-gallon Ziploc bags and desiccant for storing filament, and I'll leave the new ones unopened until I need them. The UM filaments that came with the unit were double shrink-wrapped, which was nice. I'll have to check the ColorFabb ones. How do you like to store your filaments - in a drawer or bin, out on the shelf ...?
  8. Thank you, @ClausJ - also helpful to know who to AVOID.
  9. Thank you! Somewhat helpful to see these, but not very helpful in terms of getting advice about what tools to keep on hand, what kind of storage works well, etc. Definitely gave me a laugh to see people with sh*t everywhere! That's what I'm trying to avoid. Tangent: It would be super helpful if I could search the forum for threads. I have no idea where to look for topics like this, and there's no reasonable what to click through pages and pages of threads. I'm working with a blank slate at the moment. Definitely need more storage!
  10. Hi all! I just ordered our UM3 Extended and want to prepare our space for it's arrival. [i apologize if this has been asked before, but without a search feature, I couldn't find a similar thread on this in the forum.] I'm wondering how you like to set up your printer area. How do you keep flaments organized? What tools do you keep on hand? Any tips or tricks for a functional 3D printing space? Bonus points for sharing photos!
  11. Thank you, @LePaul! I'll be sure the check these stores out. I like the idea of quick shipping! Side note: I spent a summer at the Darling Marine Center in Damariscotta. Beautiful area! [waves from all the way over on the other coast]
  12. This is extremely helpful - thank you, @krys! I found a good selection of filaments at 3DUniverse, but it's hard to tell which ones are good quality vs. just being expensive. I really appreciate your recommendations.
  13. Thanks for sharing this! It is interesting, but I agree - still many questions. Also, I find it maddening when they test things in inches. mm or microns would be so much more useful. I've found that most companies share information regarding XYZ accuracy, which is important, but I've only seen Formlabs address the issue of feature resolution. That, in itself, is interesting!
  14. Out of curiosity: what exactly do you find bad on their results? I think I had unreasonable expectations about how well it would perform. With all of the hype about SLA printers, I thought that 150-microns wasn't very good feature resolution. Now that I understand a bit more about how they work, WRT the laser dot size, I shouldn't have been so surprised. It was honestly a nice discovery that SLA printers don't have much of an edge over FDM printers (depending on what you want to print). I can't have big buckets of isopropyl alcohol sitting around (I work in a library), so SLA printers ar
  15. I am buying our UM3 today (), but my closest distributor (US west coast) is out of stock on most of the filaments that I wanted to buy (at least one of everything, basically). Also, their website is not very user friendly, so I found browsing frustrating. For those of you in the United States, who is you favorite retailer for filaments? I'd like to use UM filaments to start with, but would also be glad for advice regarding other respected distributors of high-quality filament materials. Many thanks in advance!
  16. Well, it would be nice to see tests that show performance across strengths and weaknesses. TBH, I thought the results from the Form2 were suprisingly bad, and I respect their transparency in sharing the test and the results. No such thing as a "typical design" around here. Our reseachers will be printing everything from scaled-down whale baleen plates to custom laboratory and intertidal research equipment. Prints will run the spectrum on shape, size, and function. This is the main reason why I've had a hard time comparing 3D printers - I have to balance a wide range of needs and use cases. U
  17. I guess we'll have to agree to disagree. You wouldn't even trust a test conducted by the manufacturer?! If FDM printers were so inconsistent that they can't even be reliably tested for performance, then they would be useless for professional use. But, people are using these professionally - Ultimaker themselves used them to make parts! - so we know they can perform reasonably well. This failure to characterize them in a robust way is only because we haven't been clever enough to design a good test, or no one has made it a priority.
  18. People keep saying that, with lots of hemming and hawing about materials and settings. Leaving SLA out of the equation, has anyone ever seen a feature resolution test performed on ANY FDM printer? If not, why do you think no one has done this? Is anyone interested in trying? Now I just have a bee in my bonnet about it!
  19. Yes, I understand that 3D printers are more complex than 2D printers, and I don't expect perfect prints every time or to be able to print without tweaking here and there. All I really wanted, before spending $3500, was a better understanding of the performance of the machine. Like I said before, I think this is an amazing printer, and I'm probably going to buy one. I'm not here to criticize the performance of the UM3, but to understand it.
  20. So, is there a different kind of test print that could be made on the UM3 to test feature resolution, or does the software need to be tweaked to enable these kinds of tests? If the 0.4 mm nozzle can lay a 20-micron Z-layer, seems like it should be able to do better than 400 microns in the X/Y. But, this gets back to my original question: why hasn't anyone actually characterized the performance of this amazing machine? I don't get it.
  21. Thanks for the reply, @gr5. I appreciate your time! I understand all of the caveats and the fiddling that can be done. This isn't much comfort to me, as I'll be the sole source of support for the station WRT 3D print jobs. I'm hoping to not have to tweak & reprint every job that comes through the door (and won't have time for that anyway). My question was more practical. Has UM (or anyone) actually tested the limits of the performance of these printers in a robust way? Do all the tuning and tweaking you want (thought that's not quite fair to the consumer) - what can the printer rea
  22. I'm in the midst of researching which 3D printer to buy for my library (located at a university marine biology research station). I haven't decided between an SLA or FDM printer. The Form 2 and the Ultimaker 3 are my leading contenders. They each have advantages and disadvantages. Spec sheets aren't really comparable, as they use different jargon when referring to aspects of "accuracy" and "resolution." Some of my scientists need to print near the performance limits of desktop 3D printers with respect to feature resolution. Formlabs has done an excellent test on the Form 2 that shows exactly
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