Printer: P1S
Nozzle: 0.4 mm
Layer Height: 0.2 mm (but set to variable in the model)
Filament: Overture TPU 95A
Slicer Settings: Generic TPU
I recently picked up a P1S after years on my original Ender 3. I’m using dry Overture 95A, loaded the filament from the spool holder on the back without the AMS, sliced in OrcaSlicer with the generic TPU profile. It purges just fine but when it goes to actually print, I can see the yellow extruder gear stutter and this is the result after two layers. The filament is fine as the Ender just knocked out the same print. Other filaments are still working as expected. What am I missing?
Recently dried it in a dehydrator, stored it in a dry box with desiccant, and it printed flawlessly on my Ender 3 within 10 minutes of loading it into the P1S.
How long was it in the dehydrator? Did you wiegh before and after? Even if your ender printed it flawlessly, that looks like wet TPU to me. What your describing is what wet TPU does. I went through this with some “HF Tpu” from Siraya Tech 95. Had to dry it for 2 and a half days.
5 hours at 55c, but I didn’t weigh it. Not trying to troll, but if the Ender can produce results and the P1S fails this miserably, that’s an unexpected result for me. Here’s yesterday’s E3 print.
Thanks for the info. NGL, that sounds awful I really don’t want to manually adjust the extruder tension between prints - it’s less work to just fire up Klipper on the Ender3 and get it done.
I found a TPU profile on Printables that’s improved quality somewhat. It’s still much worse than what I get on my old printer, but it’s extruding at least a bit. It seems like most people choose not to print TPU on the P/X series and that’ll probably be me too. I think there’s a new AMS-compatible flexible filament that’s going to be announced soon, so maybe I’ll give that a shot before I write the machine off for flex (barring hardware adjustments as a last resort).
If you go to Overture’s page, check under the Technical Specs. They have Print Profiles for their filament that you can download. I downloaded this and made a few tweaks. Have no issue with Overture TPU.
Yes, I back off the tension screw by 4 turns before printing TPU. Only take s a few seconds. The biggest ‘problem’ is remembering to tighten it up again for non-TPU! Although I haven’t had any failures with PLA or PETG with the reduced tension. BTW, I remember that I had to drill a hole in the plastic cover to give room for the screw to poke out - there are posts about doing this such as Constant issues with new P1S jamming - #9 by Geoffree
I really don’t want to manually adjust the extruder tension between prints - it’s less work to just fire up Klipper on the Ender3 and get it done.