What's the proper way to dimension a csk hole for a screw on a surface that has a draft angle and i want the hole to be perpendicular to the surface? I have no problem drawing it but how to detail it so the shop knows what I'm talking about. I don't really want to use datum references (confuses the shop). Would a note work something like, "CSK until round is complete +0.01" ? Refer to my pics attached. Thanks all.