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Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Ball Caster - Parametric

by sliptonic, published

Ball Caster - Parametric by sliptonic Nov 20, 2011

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Summary

This is a small ball caster to be used on robots or other things that need to roll.

The openscad file is set up to easily tweak values for commonly changed parameters:

Ball Diameter
Airgap - How much play between the ball and the wall
Ball protrusion - How much the ball should stick out of the housing.
Total Height.
Base thickness.
Mounting screw radius.
Spread between the mounting screws.

I've started playing with a parameter to switch between two different mounting types. This isn't done yet which is why the part is marked as a work-in-progress.

Ears will create a part as shown in the picture. Meant to be mounted with two external screws.

Center Screw would have a counter sunk screw in the center of the main cylinder. The caster could then be screwed in before the ball is snapped into place.

My reprap isn't particularly well tuned but the ball spins freely.

I'm incorporating this design directly into scout. http://www.thingiverse.com/thing:13042

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hey thats also useful for toolshops with a big circular saw.. or other mashines that can eat big sized materials.

mounted just as in the photo. working as frictionreducing Materialguides when cutting planks... im gonna make several boards with three of those ball-casters on thop.

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