Oozing is ruining my TPU gasket, anyway I can optimize this further?
I know TPU is difficult to print and, all things considered, this isn't a terrible result. The problem is, the oozing is occurring over the channel where my part needs to fit flush in order to create a seal. I'm using Sainsmart TPU (95A) and I'm using the matching profile inside of PrusaSlicer on my mk3s. I've tried tweaking a bunch of things:
- Checking 'Avoid crossing perimeters' doesn't seem to do anything
- I've tweaked all kinds of retraction settings, increasing length from 1 to 1.5mm, messing with the retraction speed, increasing lift Z (default is 0), and ultimately the settings in the profile seem to work best (go figure). I'm sure there is more I could do here though--it seems like a retraction problem?
- Nozzle temp is 230, which seems inline with what people recommend to prevent oozing.
- I've slowed speed waaayyy down, like 10mm/s for print moves and travel moves. This helps somewhat but pretty much gets the result you see below.
- Speaking of travel, I wish there were a way to optimize travel in PrusaSlicer. Maybe there is that I don't know about. But 'Avoid Crossing Perimeters' seems to do little to nothing, a complaint I've seen elsewhere. Is there something I'm missing here? Perhaps I could try a different slicer, optimize the travel, and avoid the oozing over my channel?
Any ideas would be very much appreciated!
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
Post your .3mf lets see what you got.
The Filament Whisperer
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
Working on that now!
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
ok
The Filament Whisperer
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
Here's it is..
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
gonna take look ill get back to you.
The Filament Whisperer
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
Try this, I would like to remind you that TPU is extremely hygroscopic if yours is not dry you are going to have stringing issues.
8 minute print let me know how it goes, I normally like to try before I send but all my printers are busy sorry.
Good luck hope this helps
Swiss_Cheese
The Filament Whisperer
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
This is extremely nice of you, thank you! I tried to slice the 3mf and got a "PrusaSlicer has encountered an error":
"G-code export to /var/folders/82/wksgwkmj6bv9vvvc3d4sh9dr0000gn/T/.75797.gcode failed due to invalid custom G-code sections:
end_gcode
Please inspect the file /var/folders/82/wksgwkmj6bv9vvvc3d4sh9dr0000gn/T/.75797.gcode.tmp for error messages enclosed between
!!!!! Failed to process the custom G-code template ...
and
!!!!! End of an error report for the custom G-code template .."
I don't know much about G-code or I'd have a go. Any ideas?
I should also add, my TPU is stored at ~20% humidity. I've heard from others that should be fine, do you think so as well?
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
I was on PS 2.2 and just upgraded to 2.3.1. It seems to slice fine there. I'm going to give it a go! Thanks again.
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
I've never hear that one before, what version of slicer are you using? this was produced in 2.3 for mk3s & mk3s+
The Filament Whisperer
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
ok sorry I was late to the party : )
The Filament Whisperer
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
Wow this is SO much better. Nearly flawless. Thank you so much!
Do you have a sense for what the biggest culprit was? The difference is just so big..
RE: Oozing is ruining my TPU gasket, anyway I can optimize this further?
the speeds at which you were printing, that was the biggest. I would Urge you to examine the .3mf and compare it to the one you were using to explore the differences.
I'm glad I was able to help,
Swiss_cheese
The Filament Whisperer