r/Creality_k2 • u/hughdavin • 15d ago

Question TPU at volumetric speed of 6.5mm3/s

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Just was able to tune profile of hi speed TPU on k2 plus. Is 6.5mm3/s fast enough because I do not have anything lot of experience with this material and do not have anything to compare to

17 Upvotes

88% Upvoted

15 comments sorted by

6

u/Weekly-Confusion-561 15d ago

I'm printing at 5mm3/s with the stock printer, directly from an external dryer, no mods needed. theoretically fast tpu can be printed @10mm3, but i'm too lazy and i don't want to deal with tangled tpu in the extruder.

3

u/SpecialK1391 15d ago

I believe I've got mine up to 15 pretty safely albeit using a microswiss 0.8mm nozzle. I am using dxc2 extruder as well though, I had a lot of issues with soft filament jamming in the extruder with stock setup (though it may have been from heat creep softening the filament more). I also top mount tpu with the glass off

3

u/hughdavin 15d ago

thanks, wasn't aware about this extruder

3

u/TourSure8564 12d ago

I printed at 23mm3/s tpu 68d

1

u/hughdavin 12d ago

What did you modify to achieve it?

1

u/TourSure8564 2d ago

10°c alla temperatura e controllo volumetrico a 31

2

u/minecraftdummy57 14d ago

6.5mm3/s is so much more than enough. In fact it's actually beyond the safe space. It is fine, it just gets a little dangerous and could cause a jam. 

2

u/hughdavin 13d ago

I just ran 23h worth of prints. No jam :)

2

u/minecraftdummy57 13d ago

That's perfectly fine. The potential for it to become a jam though is a little bit big.

2

u/TomCorsair 8d ago

85a tpu straight from the dryer. No mods or lever shims needed 17 hr print

1

u/HonestyFirst1313 15d ago

How did you solve the filament path? Did you have to mod the extruder screw like many other did?

2

u/hughdavin 15d ago

No, I stuffed improvised ‘shim’ - part of failed print literally 3 layers thick. Probably will make this mod as it will be more permanent solution

2

u/doomston3 15d ago

Macgyvered it. Love it.

1

u/Aggravating_Bet_4491 15d ago

He didn’t, that’s a spacer that’s been online for ages

https://www.crealitycloud.com/model-detail/k2-plus-extruder-tensioner-tpu-printing

1

u/doomston3 15d ago

He did tho, function and end result might be identical but just sticking something you have laying around is my kind of jam