On Mar 3, 3:33 am, Prometheus wrote:

SNIP

Just about any project made of wood I can blast through since that is
what I do for a living.

But reading the details of the knife project, I honestly think it
would have taken me six months of steady project time to do. I am not
discounting the fact either that mine would not have looked anywhere
nearly as nice as yours.

when tempering to see the colors on the blade, and the second was so
that there was little material removal left to do after the quench and
temper, and therefore less chance of me overheating the edge and
drawing too much of the hardness when shining it up.

Getting the
edges close to final thickness also allows for differential heat
treatment, as the edge will get up to temperature much more quickly
than the thicker spine.

So are you treating with a torch from the center of the blade watching
the colors move, or are you using another heat source?

Thanks for taking the time to type out the details. Metal working is
fascinating stuff.

Robert



Inquiring minds, you know.

Robert