coton61
Posts: 2
Joined: Mon Aug 08, 2016 9:49 am

Quality Issue in Flexible TPU

Tue May 15, 2018 11:13 am

We have 3 printers (Robo 3d Plus with flexion extruders). we use the same gcode files for all three printers. 2 print parts perfectly. the last one has recently started having an issue with intermittent layers printing poorly. See pictures:

Image
Image

These layers fail when flexed. I went through the help guide. I did not see a similar issue there. So I'm trying to figure out how to resolve it.

mckinnonk
Posts: 11
Joined: Sun Sep 10, 2017 10:03 pm

Re: Quality Issue in Flexible TPU

Fri May 18, 2018 2:29 am

It looks like your having an issue with layer adhesion. What temperature / speed are you using? Also, is this an old spool and how high is your humidity?

coton61
Posts: 2
Joined: Mon Aug 08, 2016 9:49 am

Re: Quality Issue in Flexible TPU

Tue May 29, 2018 10:58 am

All printers are running at 206 and 2000mm/min (we did temp towers to find the best printing temp)

It's with new rolls. I haven't had any humidity issues before and the 3 printers are side by side, only one with issue.

Ayres3D
Posts: 63
Joined: Mon Aug 14, 2017 12:15 pm

Re: Quality Issue in Flexible TPU

Thu May 31, 2018 9:19 am

Did you run the same temperature towers on all printers? If not, could it be that the thermistor is a little out of calibration on the errant one? Perhaps try a slightly higher temperature on that one and see whether it helps?

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