[TheForge] resharpening hammer drill chisels

[John Chobrda]

We have been sharpening the hand held air/electric hammer chisels and points in
the shop I work in for quite some time. We bring them up to heat and reforge
them by hand, grind while there is still color in the bit, then lay them under
the forge to cool. At the end of the day we heat just the tip of the tool to a
dull cherry red then quench in oil. This works for us. The drills have carbide
bits and can be done on a green wheel, but I've never had any luck.
John C.

Michael Boettcher wrote:

> Does anyone know what type of steel is used in the chisels sold by
> Milwaukee for their electric hammer drills?  My boss had one that he
> reforged to sharpen.  He had used it so much that it was badly
> shaped.  After reforging/sharpening he used it for awhile, then the tip
> fell off.  The steel looked like something came out of it when he was done
> forging.  Sort of a brazed look, but still silver.  No idea what caused it.
>
> Milwaukee tools says not to resharpen the bits, but it was easy and cheap,
> so the boss did it anyway.
>
> Anyone have any experience with this?  Any hints on procedures?
>
> Michael E. Boettcher
>
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