[modeleng] Question

I need to cut some internal threads. Too big a diameter for a tap, of 
course. Now the textbooks show nice tools with a cutting tip at right 
angles to the shank, which I naturally don't have. The question is this:
Can I take the odd bits of HSS steel in stock from broken taps, end mills 
etc, braze onto mild steel shank, and grind up, without the HSS losing its 
qualities?

Admittedly, there's only 2 threads to cut, in brass, so the tool doesn't 
need to be that great in terms of wearing qualities. But have any of you 
experience in brazing HSS?

Peter Chadwick
Swindon

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