Thanks Craig.

So many variables. Besides the charcoal issue, it may be quench procedure. My crucible is fairly large, holding around 1 1/2 gal. Of medium, it's designed to hold two actions. My test pieces have been unblocked lockplates. So, even though I am able to flip the crucible quickly over into the quench, there may still be oxygen getting to the pieces. I also may need a longer heat time because of the crucible size.

Since I'm now waiting on Brownell's, I'll construct the blocking rack to fit inside the crucible.

Great thanks to the members who have recently sent me Part II of Dr. Gaddy's article.

Regards
Ken

Last edited by Ken61; 12/09/16 10:57 PM.
I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.