Post heat treat

In general, a knife that is thick enough to be heat treated properly (avoiding warping, etc) is too thick to work well as a cutting tool. So at the very least, you are going to need to put an edge bevel of decent height on the blade.

If you mean, is it okay to leave the flats of the blade as is after heat treatment, then that is something which is done often.
 
there will be "hardening skin" on the steel. You don't want to glue on that, you want to glue on the steel. So that is half the knife sanded after HT.
It will also wear off and leave and ugly looking knife. Would you like bits of hardening skin left in food you prepair with your knives?
Don't cut corners, do it well or do something else
 
The Decarburized skin will start to rust and is really hard to keep from pitting. Finish grinding to clean steel minimum but beware all those deep scratches are rust prone areas!
 
Okay, settledown boys. I'm not lazy, i just liked the look of the knife when it came out of heat treat. Forget i asked. I will finish the blade. Jeesh.
 
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Yeah I forgot a damascus knife overnight one time while it was etching. That was bad.
 
Been there with the accidental extended etch too. Put it in the etch jar, went to let the dog out, got talking with the neighbor, had a beer, then another 8 or so and went to bed. Found it the next morning. Had to go back to the grinder and also flat grind the tang over since a bit was sticking out if the ferric and it left a nice little ledge.
 
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