Russ and Patrick... Craftsman contractor style saw. The stock insert is pressed tin, about 1.3mm (18 gauge) sheet metal. Not even enough room there to make an insert out of thin lexan or aluminum (no strength at that thickness).
The one he has pictured on the left is model #29973, for a 113.221740 saw.
What I would do, is order an original insert plate (they're about $14.00) and cut out the relief yourself. Mark the center of a 10" blade on the insert. Then use the wrong plate's coutout to get where it needs to be cut out.
Check often and adjust to what is there. That is the easiest way to do that. Holes will then all be correct. The size will fit. And the pressed in seats will be correct.
I've got a plasma arc, air cutoffs, die grinders... But you could drill a few holes in the corners, then cut it out with a hacksaw.
Another alternate would be to make it from sheet metal. More work and would have to level it with washers. The insert would be too thin to level with set screws.
"Don't worry, I saw this work in a cartoon once."
"Usually learning skills and tooling involves a progression of logical steps."
Last edited by MAFoElffen; 06-05-2013 at 12:52 AM.