Annealing with microwave kiln
There really isn’t a way to properly anneal in a microwave kiln.
To properly anneal a piece of glass is to bring it to a point of melting with out the outer skin losing it’s shape. (to remove any stress fractures) Then evenly lower the temperature through out the entire piece below the strain point. Depending on the size and thickness of the glass this process can take a couple hours.
I just don’t see a microwave allowing an even distribution of heat and lowering at a slow enough pace.
I have also heard tales of the microwave kilns destroying microwaves.
Mary @ 41 Design