Stan,
I don't recall ever reading about the technique, I just ended up working out a sound solution to a problem that appeared in the shop. I'm always doing woodwork and have saws, sanders etc. so making a thin wafer of wood is easy enough. I have done the same repair on the tangs of doubles where there is some wood loss around the rear tang screw. This is pretty much how these problems were addressed before the invent of bedding compound, add some more wood and inlet to the required depth.

I really enjoy seeing high quality vintage wood repairs come through the shop. One of my favorites was a Fraser falling block a client owned, it went back to the factory for a new barrel and top tang safety conversion and fore end was re-used, the new barrel was a smaller diameter and the dutchman used to fill the gap was world class.

I hope that helps.
Steve

www.bertramandco.com Hey now!
[Linked Image from i.imgur.com]