I agree with Windancer on that one.
When I started out making sheaths, low these many years, I thought `Hey the Micro wave sure would help out in the time factor' There was a sheath that I needed to get to a fellow the next day and so, LUCKILY I tried a small piece of wet leather in the Micro wave before throwing the sheath in there, it did the curl up and die dance and I felt so thankful that I didn't put the real thing in, which is funny cause I am usually very impetuous and not one for having great patients.
What I do is to use a hair dryer to speed up the evaporation of the water, or like the box mentioned above, I place them on the dash of my car, great little oven that Sun, just until they start to dry and I rework the leather over the knife I'm working on.
Don't ever leave the knife in while it's drying or submit the knife to any heating while the leather is drying, just isn't good for the knife handle and the steel. I also wrap the entire knife in seranwrap to prevent moisture transfering from the leather to the knife during the shaping portion.
So the answer to question A. is Nope, leave the micro wave off while sheath making.
G2
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It ain't those parts of the Bible that I can't understand that bother me,
it is the parts that I do understand.
Mark Twain
www.geocities.com/Yosemite/Cabin/7306/blades.html