Not just an internal ACME thread it is also left hand. First thing I ground a cutter for and machined after I purchased my 1927 9" South Bend. Made an aluminum practice one and then a brass one. Few months later a shop teacher friend gave me some when the school cleared out its metal shop.
Very time consuming to grind the single point cutter.
Union copper tube to 1/4-40 MTP ?
-
- Posts: 1546
- Joined: Tue Mar 21, 2006 2:44 pm
- Location: East Hartford, CT