Hi Denis: I do have three 6X12 surface grinders (Harig manual, Reid and a B&S) plus a magnetic sine vice for one! I have been moving ahead on this idea and have been purchasing items I think will work including a toolmakers microscope(actually 3) and a Comparator (Scherr Tumico 14" and a J&L 20"), I also have a B&S #13 tool and cutter grinder! Measuring tools? Did I mention I'm a tool Junkie? I'm addicted to them! When I cut myself I bleed Starrett Red! It would probably be easier to list the tools I don't have in the Starrett catalog! Have AutoCad on my computer so I can draw my ideas in real time. Zoom it up to see how it all fits! Been thinking about a digital microscope so I can see actual parts and how they fit!
Your right! Wear is the problem, as the sear slides off the hammer hooks the contact area gets less and less! One of the problems is that the popular style of hammer hook is a 90 degree cut in the radius of the hammer somewhat like an inverted L. The sear is in contact with the short leg of the L which on most sites do not recommend it to be less than .020 which actually means nothing! The sear is stoned to be parallel with the hammer hook but again the action is to pivot off not slide straight back. To add more problems the edge of the sear is not 90 degrees or less but about + 45 degrees. The amount of the 45 degree angle controls the amount of the engagement the sear has with the hammer hook! Every time the trigger is pulled the leading edge of the hammer hook slides down the 45 degree secondary angle and eventually rounds off the leading edge!
I thought about shimming Buck, possibly boring a 20mm hole on my Jig Borer. I should check I have a few Diamond Wheels I bought on ebay with arbors attached, they are new wheels with new arbors of a newer style in that the flange and nut is much bigger than the normal arbors, not sure why but they have what looks like an underlined W engraved perfectly on them. Possibly they are 32mm!
I'm on first name bases with most of the top Bulls-eye shooters in the country and many of the International pistol shooters. My son is one of them, Google Staff Sgt. Adam E Sokolowski, so I know what they are having problems with.
I agree 500 should be more than enough! I just mentioned I seen the wheels listed, might buy them all just to have them, guess it won't hurt to try them if only to polish off .. If they don't work I'll hang them on a nail on the wall!
Frank
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