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Hybrid Roller Slide

by dkennell Apr 22, 2012
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The slide should fit as printed, that was probably the dimension that worked with my printer and slicer at the time.

All of the HFS5 extrusions I've seen have 6mm wide slots. Curious how you're fitting a 6.2mm wide slider in there. Are they intended to be filed down until the fit is perfect?

can you add a second bearing so it will be more constraint. it looks like the downward force will create friction with plastic. it needs bearing in bottom like roller coaster.

much needed part. thanks Dave!

whosawhatsis that's a good idea. I've been playing around with printed bushings on aluminum extrusions, but it can get a little bindy. Just found this place that sells different thickness uhmw tape. I think I'm going to order some to play with. http://www.eplastics.com/Plastic/Slick_Stripshttp://www.eplastics.com/Plast...

80/20 sells pads of UHMWPE for sliding on extrusions. Among other impressive properties, it's self-lubricating, has a coefficient of friction comparable to PTFE, and is up to 15 times more abrasion resistant than carbon steel. I've been planning on testing UHMWPE tape over printed forms for linear guides on aluminum extrusions. An additional benefit of using it in tape form is that it will be apparent if the thin layer of UHMWPE does become worn, and it can easily be replaced even if the wearing is bad enough to impair printer performance. Have you considered this material at all?

I have not tried that, but it sounds like it could work. In my experience, smaller contact area is better and results in less friction. Let me know how it works when you try it

I'm actually using the UHMW stuff for my Bukobot and it's actually the opposite as far as surface area. The more surface the UHMW touches the smoother it seems to slide. Probably because of better weight distribution or something. It's really neat how this plastic works. I tried smaller pieces for the Z guides on Buko and it seemed to get worse. The material is realatively cheap so a little extra shouldn't hurt anyways :-D

That's good to hear. Were you using UHMW tape? How well does it stick to abs/pla?