Do You Sell Unfinished Copper Light Switch Covers? These solid copper wall switch plates have a heavy baked lacquer sealant to protect their finish. If you need raw copper light switchplates we suggest trying to remove the finish using a product like "Klean Sweep" brand solvent. If that doesn't strip the finish sufficiently, you might also try using an acetone thinner to further clean it. We recommend testing one cover to see if it can be stripped enough for your artistic project.