Jump to content


  • Content Count

  • Joined

  • Last visited

Community Reputation

0 Neutral

About joseph-kim

  • Birthday 09/20/1988

Personal Information

  • Field of Work
    (Product) design
  • Country
  • 3D printer
    Ultimaker 2
  1. I'd try replacing bowden tube. I can now print at 15mm^3/s with this.
  2. I was getting massive underextrusions from a bowden tube purchased from gr5 store. And I found this: Fluorotherm F015092 - 5 Fractional PTFE Tubing, 1/8" ID x 1/4" OD, 5' Length, Semi-Transparent It's long enough to make two and works like a charm. The OD fits the white clips perfectly, and I am able to use 3mm (as opposed to 2.85mm) filaments as well. The only downside is that it's much less transparent, making light-colored filaments hard to see through.
  3. @gr5 You were right on - everything is in perfect working order! Thank you always gr5 for your quick responses.
  4. I've been looking for cheaper filaments for my UM2. Being used to top-of-the-line stuff like Ultimaker, Faberdashery and Colorfabb, it was difficult to find any decent replacement. eSun was especially a huge nightmare, despite its low cost. I tested out Atomic Filament recently, and it's been giving me decent prints. It's $29.99 for 1KG spool with free shipping. Definitely worth a shot. http://atomicfilament.com
  5. @gr5 Just got an email from US Support- They are sending me a new Z-motor and trap nut! I will let you know how it goes
  6. @cloakfiend The extreme lighting and the glossy nature of that PLA is making it look melty. It's not melty at all actually. In fact, the strata is quite sharp. I am sure the temperature is not an issue. I am very familiar with the consistency vs temperature since I've been printing daily for about a year. The temps are correct for sure. I do like your idea of swapping out PTFE and the Olsson block. I will give that a shot some time. @gr5 I've been contacting the US support, but it has not been terribly productive so far. I have even taken the entire Z assembly (brass nut, screw and motor) out and meticulously cleaned it and regreased it with Magnalube. Nothing changes!
  7. @gr5 @cloakfiend I made a 3D model for the test. It's 10 x 10 x 10 mm box with 5mm tall extruded curve sitting gently on top. * My nozzle is thoroughly cleaned out, and can achieve 10 mm^3/s * All filaments I own gives same result. Here are the parameters: Here are the results Larger layer height seems to make problem worse: Z current doesn't seem to have any effect: (It sounds a little quieter. I like that.) Lowering temp down to 205 did not change anything:
  8. Thank you guys for helping out! - Here is my .ini file - My layer height was 0.1mm for the "horizontal banding test towers" and 0.2mm for the rest. - I've tested with temperatures ranging from 200 to 250, with Ultimaker PLA, Colorfabb PLA/PHA and Faberdashery PLA. All combination leads to the same result. @neotko I even took out the brass nut and the threaded rod assembly and cleaned and re-greased it thoroughly. All three Z thumb screws are on tighter side to reduce vibration. I don't think it's bed leveling issue either. @gr5 I am using the Olsson block that I got from gr5 store. I was printing fine with the Olsson block for the past month. I took apart and reassembled the head assembly just in case, but nothing changed. I will try printing 10mm tall object and measure with my caliper. I will also try adjusting Z current. @cloakfiend I cleaned out the nozzle thoroughly and I am easily getting 10 mm^3/s flow. I will check the nozzle for any slight blockage and try printing cooler. Thank you all, and I will post some test results later.
  9. I am having the exact same problem! I can rule out temperature/speed, filament, slicing or firmware issue. I highly suspect that the problem resides within the Z axis (Z threaded rod, Z motor or Z driver). - It happened randomly. I was printing fine, then my UM2 started to print like this. - I removed the threaded rod from the machine, cleaned with WD-40 and re-greased with supplied grease. The two sliding pillars are oiled properly. - There is no resistance or bump when I manually move the bed up and down. - All belts are nicely tensioned. - Printer works perfectly except for the Z banding issue. Any updates?
  10. UPS left notification and left (signature required) since no one was home. So I ran to the UPS truck from school and got my package straight from the truck. Unpacked, loaded PLA, and and sent a 30 hour print.
  11. Great! Tracking says the item is picked up (TN) and it will be here (NY) in 2 business days (UPS Ground).
  12. I placed a US order for UM2 on Sep 26, but the order status is still "Ready". I paid in full at the time of purchase. What's stopping from the US vender to ship the item quickly? Are they assembling as they go?
  • Create New...

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!