I am building a mounting system to quickly attach/disconnect 2 flat aluminum plates together. Plate One will have 2 slots at the edge which shoulder bolts will slide into. This plate needs to be flat, parallel and consistent thickness. Plate Two has the shoulder bolt attached and needs to be flat on the one mating surface. They will both be 3/8" material. They will be cut by waterjet, edged with a dry router and drilled and tapped, but no welding.
Cost is a factor as I anticipate getting these parts into production. It looks like tooling plate, such as Mic 6 or C250, is more economical than aluminum with a ground finish. I read the post by Geof at:
http://www.cnczone.com/forums/showthread.php?t=39707
in which he states the strength (relative to plastic deformation) of the tooling plate is similar to other aluminum alloys.
Please, any thoughts on other materials/alloys/processes I should consider or is tooling plate the way to go? Will finishing the edges with a dry router introduce too much heat causing loss of flatness?
Thanks