A cheap tool that one of the local pros use is fabricated from an extra long 4-40 or 5-40 screw. Generate an approximate 1/2" radius to the screw, heat works, and remove the head. Drill hole in wood dowel and epoxy the screw in the hole. I have used a 1/8" die sinkers file for many years. I ground half the file away so I could see where I was going.
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