[TheForge] Temper colors

[CGRAF]

What did you make the knives from?
How did you temper them.

As this is admittedly "practice" I am guessing that the answer lies in 
one of those answers.

Mike Graf

On 1/7/2014 9:06 AM, Bruce . wrote:
> 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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