For the following design cut out two and then slide the two together using a slot cut in the middle of both. Be sure to use a clear drying glue.

Abadu44.com
copy righted
Nov 8, 2012
1/8" wood or better yet Plexiglas or both , using one wood and one Plexiglas .Just make sure both are the same size and cut out does not go past the middle .

Abadu44.com
copy righted
Nov 8, 2012
This design is a little more elegant and probably harder to cut out of wood, maybe a thin sheet of brass or copper.
This is a more chaotic design that could be either an inside or outside cut . If you're using an inside cut add a 1/4" or 1/2" boarder around outside.