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Need to adhere copper sheet to wood covered with cured epoxy. How?

Need to adhere copper sheet to wood covered with cured epoxy. How?

Need to adhere copper sheet to wood covered with cured epoxy. How?

(OP)
I am making a kitchen counter top that is plywood underneath and I want to apply a sheet of copper to the top. Tried it using "System 3" 2 part epoxy and the bond was ok to the wood sustrate but it let loose from the copper. I need to try another approach. Now I have the wood covered with a nice bed of cured epoxy and I want to bond my copper to it. Can anyone suggest a solution? Thanks, Trees12345.

RE: Need to adhere copper sheet to wood covered with cured epoxy. How?

If you can make it look nice, you might try mechanical means.  Rivots,screws, and such, and use the epoxy as a sealant rather than an adhesive.  However, if you can make the copper EXTREMELY rough with pits and divots, a large amount of epoxy would create its own mechanical bond.

RE: Need to adhere copper sheet to wood covered with cured epoxy. How?

Hopefully the epoxy wasn't too expensive.  You have a couple of different options for bonding the copper, and a couple that I would like you to avoid.  Promise me that you will not use a silicone based product!!  The acetic acid that is released during its cure will corrode the copper.  The ways that you can go are with a cyanoacrylate.  You will either use a "Methyl" based CA or a "rubber toughened" CA.  The other option is a Moisture cure urethane.  The urethane will give you a longer working time but will take 24 hours to fully cure.  For most other adhesive solutions, you will need to score the surfaces.

Good luck,

John Schrock
www.glubie.com

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