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what are those parts?

Posted by jedynywiking 
what are those parts?
September 16, 2012 10:06AM
Hello Reprapers!

I have a rather silly question: where do you use the parts from the attached picture?
I got exactly two of them together with "parts for prusa mendel it.2". The "how to build" does not mention them.

Its easy to figure out, that standard 608 bearings go nicely into the top.
First I thought this is supposed to be some kind of plastic roll holder, but...

Anyway, I went through the web and could not get the answer.
Did any of you come across those parts?
Please direct me somewhere.


Edited 2 time(s). Last edit at 09/16/2012 10:08AM by jedynywiking.
open | download - sP9160116.JPG (48.1 KB)
Re: what are those parts?
September 16, 2012 10:30AM
Looks like this one [www.thingiverse.com]
Re: what are those parts?
September 16, 2012 10:59AM
I'd recommend against using those, the idea is that they hold the z threaded rods straight, but in fact you want the z rods to wobble around unconstrained, while the x-axis is rigidly held by the z smooth rods. I just ended up with a load more z wobble when I installed mine.
Re: what are those parts?
September 16, 2012 12:11PM
Thank you guys for such a quick link and useful tips! thumbs up

Following James advice, I will not be using them according to their purpose. On the other hand, it would be a waste not to use them winking smiley

I am thinking about "plastic spool holder". Any other inventive ideas grinning smiley ?
Re: what are those parts?
September 17, 2012 03:56PM
Don't use them realy bad invention yawning smiley

Re: what are those parts?
October 05, 2012 11:27AM
By all means re-use the bearings for a spool holder but don't use them on the z-axis.
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