Adam Fox, DipWCF, is well known for his excellent tool-making ability. In this article he shares his method for making a concave stamp in simple, easy to follow steps.
Essential tools to make the stamp. The steel used is inch round, S7.
Forge the steel into a rectangle shape.
The shape you are looking for.
Form the stamp to the desired shape.
Punch the eye hole three quarters of the way down through the steel.
Drop a little bit of steel filings into the hole and re-punch the eye hole a second time which is a good indicator where to punch through from the other side.
Punch through from other side.
Mark three and a half inches.
Proceed to cut all the way around the marked steel.
