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Working Copper Sheet Goods for a Top Insert
Question
Cutting the material - the sheet good is .086 inches. How would you cut this material to a clean edge? Can we get a special blade for the table saw? Should it be cut first then line up with substrate or is there a blade where you can glue this up over size and cut copper and MDF at the same time? This is just a small rectangular blank that needs one surface only. No wrap or edging needed. Would balance sheet with standard backer on underside work? Forum Responses
From contributor J: My can of contact cement says not to use on copper. From contributor D: How large is this insert? My local liquor purveyor installed copper counter tops at the check-out, with scanner windows set flush. They looked great for a week or so. I normally step right up and say "I can solve this problem for you, but am reluctant in this case since I don't know how to bond the copper to a substrate to prevent movement. And should it be backed with equal copper? Heavier gauge used throughout? Lighter gauge? So, as you now know, I can't help you, but I'm curious as the solution. I'd try some tests with marine epoxy. If your panel is small enough and set within a wood frame, you may not see the expansion, but I wonder. From contributor T: Copper and contact don't play nice together. For a small job I would roll out polyurethane (gorilla glue) and vacuum bag with a platen to smooth out the face. Clamps and cauls or a J roller may leave impressions on this gauge that can telegraph through. I have had good luck doing this on S.S.pcs.to 3/4 ply that I lay up for custom hood liners. From the original questioner: This is a small piece roughly 21x24 so cold press with the correct adhesive will work fine.
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