The idea for this arose from discussing stocks and grips with Big Steve
I used it to mark out screw holes on 6 grips, still got two of them in the wrong place. Part of the problem is that I need the jig a little wider than the grip thickness to get the nylon screw into the underside of the screw hole, and this translates to slop. I also made the jig wide enough to accomodate my thickest blank, and that allows some slop into the equation. I think I'll try making another that has an adjustable width (because using the same thickness blanks everytime is just out of the question )
This is what one of the "off" holes looks like:
When they're off top to bottom I can usually adjust the wood to metal junction to line it back up, but side to side like this, just plain out of luck.