Copper against Oak.

[Bod]

I'm making a pair of oak boxes, in the lids there is an idea of putting an engraved copper disc.
Think dogs ID tag. 30mm dia, 5mm deep, the oak at this point is 8mm thick.
I'm making a flat bottomed hole with a router, and plan to epoxy the disc in flush with the top surface.
The disc is pure solid copper. Fortunate find at a car boot, 6 for a £.
Overall finish will be Button polish, and wax.
Do you see any problems?

Bod

 

[Droogs]

just give the back a good rub with 80g to give the epoxy a mechanical key and you're good to go. If you want it to be shinny and not tarnish and maintenance free give the front of the disc a couple of coats of 2 pack car laquer