02-07-2016, 04:11 AM
I made some new shoulder bolts for the bump knurler on my mates lathe. The soft Chinese ones had worn out and the result was a smear, rather than a knurl. I picked up some O1 and milled the hex and then turned the rest. Heated them to cherry red and quenched them in some old oil. I then heated them to the point where the oil burned off and let them cool. I had to use washers, as the holes were countersunk for some reason. The thread is M6x1.00 and the hex is 8mm.
After heat treating - compared to the original worn out one
All done!
After heat treating - compared to the original worn out one
All done!
Hunting American dentists since 2015.