I'm in the process or quoting a brass screw(large quantities) to make on my Citizen M20. The machining of the screw itself is quite simple, but what has me baffled is how to make the phillips drive. If you look at a standard phillips screw head, it has tapered cross wings, so if I were to mill it, I guess I would need a live angle attachment..........but the problem is that I don't have one nor do I think that I would achieve a reasonable cycle time to make that way.
I guess my question is..."what is the typical mfg process used to make phillips drives? Is it done by forging or stamping? Has anyone ever tried to machine a phillips drive on a cnc screw machine? and if so, how?