[TheForge] Temper colors

[Bruce .]

This sounds incredible.  Seems to me that temperatures of at least 400F are
needed to get temper colors -- and that's pretty hot for meat.  Are you
sure that's what you're seeing, not some other kind of discoloration?
Bright metal can discolor for a number of reasons, including oxidation
(rusting), and, after all, temper colors are just thin layers of oxide.

Bruce
NJ


On Tue, Jan 7, 2014 at 9:38 AM, martin marks <jigsawman2000 at yahoo.com>wrote:

> Good morning gang,
>
> I have a rookie question. I have been forging knives for friends of mine
> for some practice. I have heat treated, hardened, and tempered them then
> polished the blades to a high mirror finish. They look ok but I have found
> that when they are used to slice hot meats like a roast or steak, the
> temper colors run the blade again and ruin the finish. I assume the blade
> has to be treated to prevent this issue.  Any advice? Thanks guys.
>
>
> Zach
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