I want to use my OpenBuilds MiniMill for cutting brass/aluminum plates 1/4" thick, but I haven't looked into workholding yet. Do you have any tips for this? Or if you know good resources to learn? I don't have tight tolerances at all, but I want to cut both sides of the part. It would be useful if I could square the part with some reliability. This is what I think I'll be doing: Operation 1: Facing the top Milling the side profile Milling a pocket Chamfer edges Operation 2: Flipping part Facing other side Chamfer edges Engraving serial no.