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Prusa i3 Rod-Mounted X Tensioner

by thinkyhead Apr 13, 2013
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Really interesting. Not to say...smart!

Thanks! I liked this approach better than sticking a spring-tensioner on the belt or printing a whole new X-idler part. Of course now I'm using http://www.thingiverse.com/thing:554719 on my i3, but these little things are great for any printer where belts come close to the rods.

Prusa i3 Add-On X Tensioner

Very nice simple design! I've been using this for awhile now and it's been reliable. Also, I didn't have a 624 bearing when I originally made this, so I designed a 3d printable replacement.

Nice! That's a new idea. Should work ok as long as it's nice and round. I've switched to using my "add-on x-tensioner" on my i3 but I'd still use this design on any machine that didn't have an easy way to add a tensioner to the end.

Yeah I've ended up not buying any real bearings because the plastic ones I made have been surprisingly reliable. Didnt even use any lubrication or anything. I may switch to the design you mentioned simply for the sake of change and keeping things fresh, but thus far I've really had no need to.

I'm in the same boat with my printed bushings. They work so well I don't think I'll ever need to go back to LM8UU bearings or Igus bushings. That's 10 more parts (on an i3) that can be printed instead of sourced!

When I slice this there is a gap where the screw hole is. Any tips?

What slicers have you tried? It seems fine for me using Slic3r