Finished up the screw today, shipping the set out to Ed (hopefully) tomorrow.
The last operation after turning was to mill the flat, easily done with my new-to-me square 5C collet block.
Fitted to the screw, there's just a touch of play at either end, firm in the middle. It may be just a .001" bow, no more than that. Or, it could be the screw was a little dirty, as the second time I tried it the fit seemed better.
Close-up of the screw thread, a 5/8-10 LH Acme. Done with a lay-down threading insert, Carmex 16EL-10ACME grade MXC.
And one of the M12x1.5 6g, done with a Vardex 3ER-1.5ISO grade VTX.
Overall, I'm happy with it and pleased that the project really only took two sessions in the shop, about 3 hours each piece. Well, three sessions really because I missed the second posting of the screw that Ed had posted and had to go back to take off another .0024" to bring in the .350" dimension for the flat.
The last operation after turning was to mill the flat, easily done with my new-to-me square 5C collet block.
Fitted to the screw, there's just a touch of play at either end, firm in the middle. It may be just a .001" bow, no more than that. Or, it could be the screw was a little dirty, as the second time I tried it the fit seemed better.
Close-up of the screw thread, a 5/8-10 LH Acme. Done with a lay-down threading insert, Carmex 16EL-10ACME grade MXC.
And one of the M12x1.5 6g, done with a Vardex 3ER-1.5ISO grade VTX.
Overall, I'm happy with it and pleased that the project really only took two sessions in the shop, about 3 hours each piece. Well, three sessions really because I missed the second posting of the screw that Ed had posted and had to go back to take off another .0024" to bring in the .350" dimension for the flat.