To cut a peice out, which is what I am setting up to do BTW, you can take a peice of plexy maybe 3/8" thick and clamp it directly to the table. Then clamp your copper stock directly to the plexy on table. Mill the design and drill the holes and then cut the peice out. You will go into the plexy instead of the table when cutting all the way through. I am trying to figure the best way to clamp the material down but all tabels should have the slot grooves in them for clamps. Probably have to mill some custom clamps and stuff but I think it will be worth it. Whenever I get that going I will post some pics.
I think it was Bladrunner that had some pics of clamping directly to the table.
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