1.2 MM with MAX MATERIAL in my world of inches, That's .050 that's a mile, if your machinist can't hit that or get somewhat close, They might want to pass this on to someone else. Your looking into this to deep, talk to your machinist and see where he is making his "Z" have him mark it, and you establish Your "Z" there. I only wish I had that tolerance, most of my cast were .020 to .028 or in mm .508 to .7112
How would I include Datum -Z- in the alignment highlighted?
