Harry,
That original Power Custom fixture is great! It also makes perfect Redhawk triggers every time. I later got the second fixture for working on Garand triggers and some other odd items, but found its design did not use a single reference surface to make it inherently true, the way the first one was designed. As a result, I had to disassemble it and spend a couple hours with the parts on a surface grinder to true the surfaces perpendicular and square. Once trued, though, it works fine.
On the 1911's I still use a tool I designed myself back in the mid-80's. It lets me adjust the stone angle across the sear in half thousandths for those odd occasions when you run into a frame whose hammer and sear pin holes are not perfectly parallel. There used to be more of those. CNC machining has been good for firearms manufacturing.
That original Power Custom fixture is great! It also makes perfect Redhawk triggers every time. I later got the second fixture for working on Garand triggers and some other odd items, but found its design did not use a single reference surface to make it inherently true, the way the first one was designed. As a result, I had to disassemble it and spend a couple hours with the parts on a surface grinder to true the surfaces perpendicular and square. Once trued, though, it works fine.
On the 1911's I still use a tool I designed myself back in the mid-80's. It lets me adjust the stone angle across the sear in half thousandths for those odd occasions when you run into a frame whose hammer and sear pin holes are not perfectly parallel. There used to be more of those. CNC machining has been good for firearms manufacturing.