Heavy TPU roll problem

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erkan
Posts: 4
Joined: Fri Jun 18, 2021 8:46 pm

Heavy TPU roll problem

Postby erkan » Mon Jun 21, 2021 8:04 pm

Hi,

I am using a 1 kg PolyFlex TPU95-HF and it seems like my Pro2+ having difficulties to rotate the roll and since the filament is very flexible, I am having issues.

Is there any solution for this? I was thinking of having a ball bearing around the filament spool holder?

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ccclarke
Posts: 161
Joined: Wed Apr 08, 2020 6:09 pm

Re: Heavy TPU roll problem

Postby ccclarke » Mon Jun 21, 2021 11:23 pm

Been there, done that. Here's what fixed it for me:

The stock spool holder builds tension and then releases. With the bearings these use, (available at any larger hardware store) once the tension on the nut is adjusted, the filament pulls evenly.

I've installed a pair of these on three Pro2's @ work: https://www.thingiverse.com/thing:2505551

And printed these to position the Bowden tubes and guide the filament off the spool: https://www.thingiverse.com/thing:4231551

I also replaced the stock Bowden tubes with this: https://www.matterhackers.com/store/l/c ... k/ME7M2FX9
It's inexpensive and 1 meter is enough for two spools.

CCC
Male Modeler / Sub-Human

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Steven@Raise3D
Posts: 399
Joined: Thu Dec 17, 2020 11:24 pm

Re: Heavy TPU roll problem

Postby Steven@Raise3D » Mon Jun 21, 2021 11:57 pm

erkan wrote:Hi,

I am using a 1 kg PolyFlex TPU95-HF and it seems like my Pro2+ having difficulties to rotate the roll and since the filament is very flexible, I am having issues.

Is there any solution for this? I was thinking of having a ball bearing around the filament spool holder?


For larger spools of flexible material, you may need to use something like a PolyBox or printed spool holder with bearings to provide a friction-free method of feeding the filament into the machine.


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