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Why do my TPU prints look like this?
(imgur.com)
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this post was submitted on 23 Jul 2023
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Not necessarily. If you don't hear any sizzle like little pops when extruding you are fine.
Also watch out for retraction amount and speed. You don't want more than 1 or 2 mm of retraction at 15mm/s and try to only print that slow as well.
Do these seam reasonable?
I don't go above 20 mm/s for any print setting with tpu.
All depends on your extruder. A decent extruder should have no problems with 200mm/s+
No
Just because you can't get it working doesn't mean it's impossible. Vez is printing tpu benchys under 6 minutes, so it's clearly possible.
I don't know what you are talking about. I make real things out of tpu that get used everyday for years. I don't know who pez is and I'm not interested in bench speed runs.
I get that speedbencys aren't functional objects but as long as you're not running out of flow rate the material properties shouldn't differ between 20mm/s and 200