I am working on aluminum sheet metal just testing for right now and I know it won’t sit perfectly flush. But in my testing I am curious that, assuming it is all perfectly flush, how low do I put the Z axis for zeroing to start the job? I’ve seen some use a sheet of paper but I am just wondering if there is a specific science to this?
My end goal is this: cut out an oval hole in .04" thick aluminum with 2 tabs at .015"-.02" thick. I don’t care if I have to go a little deeper to ensure the sheet metal cuts all the way through but I want to be certain. That and I really need a way to hold the metal flat.