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Fillament spool Bearing Hub

by SimCity, published

Fillament spool Bearing Hub by SimCity Mar 19, 2013
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Hub for my fillament spool i use for loose fillament broke due to not feeding fillament through guide....

Time to upgrade it. think i saw something simular for one of the other fillament spools but thought this one needed some love as well.

strpped out code for the center of hub, inserted emmetts bearing code in its pace and voila bearing hub

UPDATE: so uploading stuff at 1am, not the smartest move. Forgot the bearing file, which is slightly modified from emmetts and forgot to flag as work in progress as i never had time to actually print it yet.


print al the parts of the original fillamnet spool (or whatever itteration of it you prefer)

print this hub instead and assemble like normal.

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It printed well, after I changed the tolerance setting to 0.7


I printed it. No parts will move. I may hit it with a large hammer.

you may need to tweak the tolerance and pitch angle a bit.

I had a go with the OpenSCAD file. It bugged out as it didn't know the value of PI. I told it PI = 3.1415926 and it then bugged out with "WARNING: Ignoring unknown function 'len' a zillion times..

sry that was a bit misleading the pressure angle is what adjusts it not pitch, my apologies. variable called P, change it to a slightly smaller angle to reduce the overhangs and bump tolerance up, from the pic your printer is not liking that finer gap or its the slicing software. Only try 0.15 if your machine is really fine tuned. This is the default of emmetts so as i hadn't printed it yet didn't adjust it.

Could go higher on tolerance anyway as its only a spool holder a bit of slack wont hurt it.

Thanks for the advice, but I can't successfully run your OpenSCAD file as it produces many lines of "WARNING: Ignoring unknown function 'len' ".

well that is odd. len is a inbuilt function of openScad. I'd suggest re-downloading bearingSpool.scad and just see if you can get it to work before changing anything. If you can't issue is with your openScad. Make sure you have the latest version running.

Also worth a try is emmetts scad file for the bearing, though this is setup for the customizer so you will see a bit of odd code that makes that work.

You were quite correct. I was using a 2011 version of OpenSCAD. I now have a 2013 version.

Like this, the file wants 'bearingSpool.scad' where did you get it from? :)

bearingSpool file is up. Don't upload things at 1am you forget to do things.

Its a slightly modified ver of emmetts bearing. made it a module and hard coded the params, so to adjust change the values in this and save it for the time being didn't get round to adding vars to the module.

The one issue with uploading things at 1am in the morning, you forget to add things.