donald.k6
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Questions about Spool Holder

Feb 11, 2018 10:33 pm

I've been looking on Thingiverse and would like to make a new spool holder to facilitate filament changes. There are two basic kinds: the ones that are similar to the holder that comes with the Prusa Mk2S where the spool is held through the middle, and the ones that provide a bottom on support, similar to the following: https://www.thingiverse.com/thing:2362427.

I'd like to make one similar to the second one linked above, where the spool is placed on the rolling supports and has nothing through the middle. However, my concern is this: if there is a kink or jam in the filament such that it no longer comes off the spool, or is otherwise held up on the spool, could the extruder pull the spool off the holder, such that it rolls off into the front and comes crashing down onto the extruder or print bed? Or am I just being overly cautious?

I'd love to hear from others who have printed/used this style of spool holder and their experiences.

Thanks very much in advance!

Don K.

PS - My printer is an Original Prusa i3 Mk2S, with less than 4 days total print time on it. Just got it in December and love it.

Birdman2010
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Re: Questions about Spool Holder

Feb 16, 2018 12:04 am

Scroll down and look at the single arm spool holder on the new MK3. From my understanding, this new single arm spool holder will fit on our MK2s printers. I am going to print one of these single arm spool holders and test it. I keep having problems with the two arm spool holders because one of the sides keeps coming loose!

Images here: https://www.prusa3d.com/#our-printer

STL for single arm spool holder here: https://www.prusa3d.com/prusa-i3-printable-parts/

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joan.t
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Re: Questions about Spool Holder

Feb 16, 2018 12:38 am

I had a spool of filament fall off the two arm mk2 spool holder, and damage the Y motor bracket

the single arm mk3 spool holder does fit the mk2 frame... I have just tried it...


regards Joan
I try to make suggestions that I believe to be well founded and safe,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions,
what you do, is YOUR responsibility.

rob.l6
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Re: Questions about Spool Holder

Feb 16, 2018 2:26 am

joan.t wrote:
Feb 16, 2018 12:38 am

the single arm mk3 spool holder does fit the mk2 frame... I have just tried it...


regards Joan

Yes, I've been running one for a couple of months now. Apart from a small amount of deformation at the end (due to the mass of the spool) it is working fine. I did print it with PLA though so that may be the cause.

It is a huge improvement over the two arm design.

donald.k6
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Re: Questions about Spool Holder

Feb 16, 2018 3:00 am

Thanks everyone for the replies. I'll play it safe and print the spool holder for the Mk3.

Thanks again!

Don K.

deeke.c
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Re: Questions about Spool Holder

Feb 16, 2018 10:59 am

https://www.thingiverse.com/thing:1768975

I've been using this thing for a couple of month now and I'm very happy with it.

eric.k4
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Re: Questions about Spool Holder

Feb 16, 2018 5:54 pm

rob.l6 wrote:
Feb 16, 2018 2:26 am
joan.t wrote:
Feb 16, 2018 12:38 am

the single arm mk3 spool holder does fit the mk2 frame... I have just tried it...


regards Joan

Yes, I've been running one for a couple of months now. Apart from a small amount of deformation at the end (due to the mass of the spool) it is working fine. I did print it with PLA though so that may be the cause.

It is a huge improvement over the two arm design.

PLA is stiffer than other materials (except maybe CF PLA but that will break anyway). probably needs to be thicker since it was made for injection molding and not printing.

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nikolai.r
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Re: Questions about Spool Holder

Feb 16, 2018 6:05 pm

I don't like to have the spool on top, so I prefer this things:
https://www.thingiverse.com/thing:2119644
https://www.thingiverse.com/thing:1001312

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joan.t
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Re: Questions about Spool Holder

Feb 16, 2018 11:32 pm

I have just looked at the mk3 spoolholder in the downloadable parts and the git hub version, and they are both much less chunky around the frame fitting, than the original

regards Joan
I try to make suggestions that I believe to be well founded and safe,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions,
what you do, is YOUR responsibility.

ray.m2
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Re: Questions about Spool Holder

Feb 19, 2018 10:27 pm

I just bought some Petg and printed the holder from the Pusa site and I think it turned out really well. I fits the frame perfectly and works better than the original.
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