Was looking today found decent Al plate with threaded holes
Hole pattern varies and different sizes, some penetrate all the way through so not hermetic
Dimensions are 12 x 16 x 3/4"
Some scuffing, not perfect, but should not affect once covers are on
Thought they would make a nice base plate for projectors or small optics bench
One I will be keeping, but at least one other if anyone is interested
Scrap prices + shipping from west central Michigan