Hello all.

Fairly new to this whole model engineering lark- but think I'm getting the hang of it. I'm making an Edgar Westbury Trojan, so started making a Harold Hall grinding rest to sharpen the tools to make the engine- and have spent the afternoon making a fly cutter to help make the rest to help make the engine… Very satisfying despite not actually making what I set out to do…

Anyway- picked this up at a carboot sale for free- I saw the glint of carbide in the bottom of a box of rust… The carbide has a roughly 80deg included angle, virtually no top rake, 1/4" along the longer edge, and a graduated dial behind the cutter. The threaded shank is approx 1/2" and pretty fine pitch.

Any one any idea what it is from/for?

Richard.

Ah, many thanks for that- I had been considering chopping it up to keep the carbide on a simple shank for chamfering purposes… I will now have to keep it in the hope of one day finding enough of a holder to use it!