We cut acme pin/boxes everyday, do you know there are different types of acme thread forms? also different classes of fit,ie:- 2g-3g-4g, smaller the number of fit 2g the bigger the tolerance between male and female thread,is the pitch on your lathe ok?---- if you drop me an e-mail with the...
beavers is about right another company to try for tooling would be OSG who sell good quality tooling, but rather you than me using driven tooling,dependant on the depth of the hole i know you will have your problems, we always bite the bullit and if possible set up a cnc m/c centre to drill...