The aluminum plate is 3/8" thick. First I traced the layout with a center punch and flipped the layout for a mirrored layout. I use carbide hole drill- one like photo. After all drilling are done I sanded the edges and top of plate with orbital sander. The sanding in quick, no need to go gentle with the sander. Finished with a clear metal protacttion coat.
I love the aesthetic of these monoblocks. Can you describe how you made those aluminum top plates?