Any advice printing tpu ?
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I do not have glass but I use bed temps around 70°C, this is on a PEI like material.
Much depends on the hardness of the TPU, as a general rule of thumb the harder, the more temp it needs.
Don't forget to disable retractions (but I guess you already know that) -
@cosmowave just a generic TPU flexible , but not super flexible .
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@peter247 I got a flexible (Winkle Tenaflex) that was PP/TPE, and didn't adhere to ANYTHING. I finally got it to adhere to packaging tape, and later on I started using Magigoo PP. Have a try with packaging tape and tell us how it went!
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@egon-net What about blue painter's tape ? , not used that for a long time on my printer
Ender 5 plus linear rail and hemera powered by duet 2 wifi , CR10s pro v1 with bltouch mostly stock , BLV mgn Cube slowly being built powered by duet 3 mini 5+
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I personally have found that TPU prints best on those cheap crappy black surfaces that everyone replaces as their "first mod" to their 3d printer. I swapped to a steel/PEI plate a long time ago, but when I started with TPU i put the cheap black textured surface back on and I have never had a part curling issue.
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@whosrdaddy Yep , I think you could call it hard , when you print at 40% infill it is solid.
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@64bit I'll try one of the sheets which came with my flashforge creator pro.
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TPU likes thick layers and relatively slow print speeds (I keep it down to 50 mm/sec), retraction off. Reduce filament pinch pressure in the extruder. You can clean up the hairs after the print is finished. It sticks well to a 60-70C PEI bed surface. I don't use a cooling fan with it at all.
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O.K try again .
First I'll try it Hot 80c , must hotter than my 50c I set it too like PLA .
Than try tape or a covering if that doesn't work all at 50mm/s , which is 13mm/s first layer . -
@peter247 said in Any advice printing tpu ?:
@egon-net What about blue painter's tape ? , not used that for a long time on my printer
Nope. It didn't work. It had to be polypropyplene tape, like the typical transparent packaging tape.
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@egon-net I know what you mean now the brown / shiny polypropyplene packing tape
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@peter247 said in Any advice printing tpu ?:
@egon-net I know what you mean now the brown / shiny polypropyplene packing tape
Yes, that tape! That worked for me. All the other materials I tried were like printing eggs on a teflon pan.
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@egon-net i am using the Zimple Ziflex PEI powder coated sheet.
it sticks relatively good with a brim. -
@danielkrah I already use a PEI sheet, but there's no adherence at all. I end up with the adhesive tape, and it kinda works.
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I've only done a few bits for experimentation.
I just used Pritt (white glue stick for paper) and that worked fine, temperatures 70 & 240.
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I print Ninjaflex TPU without any problems on glass and carbon.
Never had a problem with sticking. Mostly it sticks to much! -
@cosmowave said in Any advice printing tpu ?:
Mostly it sticks to much!
This has been my problem as well. Little bit of glue stick to act as a release agent.
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I was originally using buildtak sheets, printing the same item repeatedly in the same location on the bed, got about 20-30 parts. Each part takes 9 hrs to print.
I then switched to garalite G11 3mm sheet 16months ago and still haven’t had to touch up the G11 surface. Best money spent
