[Isaac501]

Originally Posted by magnets

Normally, we would do that, but money for buying robot parts has become an issue for us, and we'd still like to have a practice robot. We could save some money making these and the little cams ourselves.

My plan was to make some of the parts we usually buy on our CNCs on the first few days of build, as the CNC is not usually in use on these first days, and we have students who would do this.

I was originally planning to just do a row of 6 or 10 on one piece of aluminum, but I'm thinking it may be easier to take one, machine the top (the tube end that fits into the other side) all the way down to the base, then put it in a fixture plate with a 1.375" wide square with radiused edges to locate it to machine the outline, the mounting holes, and the bearing flange c-bore.

If $20 for a properly machined and toleranced part is a concern, a pair of drilled and tapped holes the appropriate distance from the bearing is "free".

Use button head screws as retention for a flanged bearing.