02-15-2014, 08:58 AM
You don't want me to get into THAT discussion. 
As a news note of community interest though, I will need to use my surface grinder and sine bar vise to make a HSS internal threading tool (bit) for a 1-1/4-5ACME and fairly soon. Yes, I could do it by hand on the bench grinder. However, short little internal tools tend to get very hot, and I want a very high quality thread form for this.
As a news note of community interest though, I will need to use my surface grinder and sine bar vise to make a HSS internal threading tool (bit) for a 1-1/4-5ACME and fairly soon. Yes, I could do it by hand on the bench grinder. However, short little internal tools tend to get very hot, and I want a very high quality thread form for this.