3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The r/functionalprint community is now located at: or !functionalprint@fedia.io
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I'll start with I've never actually tried using tpu despite having a roll. I also have a second non mmu printer.
What I do know is there there are multiple levels of softness with tpu. I think I was watching a video about the Prusa Core One, talking about how it handled tpu, and they needed to step up from super soft 60 to less cooked spaghetti like 90 just to feed up the tube and to the print head.
I also remember the MMU settings in the firmware have a material type option per input. I don't recall if TPU is on the list, but most others are fine without changing this setting, so maybe?
Also remember there is a problem with mixing material type in a single nozzle. The purge is not full and will change the chemistry/behavior of the plastic.
The new multi nozzle Bambu suggests using the alternate single filament nozzle for a different material type.
I think it was a video about the h2d from 3d printing nerd talking about this.
https://youtube.com/@3dprintingnerd
I currently print TPU 90A with my Anycubic Vyper and it works great even thou it's a bowden setup. It's IMO a great material if you need something that is kinda soft, you should really try it out! But from what I read the MMU doesn't really like TPU, but I think there are multiple versions of the MMU so maybe the newer ones are capable of handling TPU? Gonna check that again.
Also I thought I read somewhere that TPU/PLA didn't have the same problems like PETG/PLA or PLA/ABS/ASA, but I will check it again. Thanks for the input!