Bluing annealed tool steel

[Everett Fulkerson]

Despite my best google-fu, I cannot find a straight forward answer to this question.

If you were to grind an edge on unhardened tool steel and caused a bit of bluing, would this have a negative effect on the cutting edge after heat treating, or does the process of heat treating "reset" the metal?

Thanks for any insight

Be Good
Rhett

[Dennis Ford]

The heat treating does "reset" the hardness. After heat-treating, the tool hardness will be determined by the steel and the most recent heat treatment.

[George Carlson]

Also, finish grinding is usually done after heat treating, this is where you would have to be careful.

[Everett Fulkerson]

Thanks for the replys. I've been grinding post HT but thought I could speed things up by grinding pre HT.

Be Good
Rhett