Drilling & tapping
Posted: Thu May 07, 2015 5:28 pm
Well, I picked up 2 older MKII's. A 5 1/2" blue and a Stainless 5 1/2" 22/45. As they were older ones neither came drilled & tapped. so I ordered a couple Weigand bases and went to work.
thanks for the drilling template Bullseye.
I've done a few blued ones over the years, so no issues there. Just be careful, measure twice-drill once-measure twice-drill a few thousandths more, etc.
The stainless was a lot tougher steel. Now I had only used that tap for the 3 other holes in the blued one, so it's still in very good shape. Starter tap for the rear, but the two blind holes in front were very hard to keep in line as I'm using a finishing tap. Never broke the tap (haven't done that for a very long time, not fun), but I swore it was about 5 inch pounds from snapping more than once. Lots of Do Drill and cleaning out the hole & tap about every half turn.
Finally did finish about 2 am, put on Ultra Dots and benched them. Mama was gone so I was free to shoot in the middle of the night without disturbing anyone.
It was a very good day!
Al
thanks for the drilling template Bullseye.
I've done a few blued ones over the years, so no issues there. Just be careful, measure twice-drill once-measure twice-drill a few thousandths more, etc.
The stainless was a lot tougher steel. Now I had only used that tap for the 3 other holes in the blued one, so it's still in very good shape. Starter tap for the rear, but the two blind holes in front were very hard to keep in line as I'm using a finishing tap. Never broke the tap (haven't done that for a very long time, not fun), but I swore it was about 5 inch pounds from snapping more than once. Lots of Do Drill and cleaning out the hole & tap about every half turn.
Finally did finish about 2 am, put on Ultra Dots and benched them. Mama was gone so I was free to shoot in the middle of the night without disturbing anyone.
It was a very good day!
Al