Thanks for the feed back about the friction issue. We weren't thinking about how accurate the plates needed to be.
What is annoying about cad is that it can be hard to see the scale of things when they float in a vacuum with no references. The can OD is 3" and the stock is .25" wall. Attached is a more realistic view of how the finished product would be used. The chassis tube is 1x2" aluminum tube and the top of the tube would be about 5" off the floor.
