@Herbie, what do you do that for?What benefits are there to it?
In January 2003 I was anxious to dry my very first home grown buds, so I took a couple of them and put them in the microwave. My (former) dealer stopped by that night and smoked some of it with me. I told him I quick dried it in the microwave. He told me that his dealer told him it was bad for the potency to do that. Having no other info to go on, I took it as true and never microwaved weed again.
That sounds about right, especially if one of those metals in magnesium. Mag is a flammable metal. I used to bring home mag chips from work around July 4 when the kids were small and light it on the sidewalk for them.
From my experience, not necessarily. What I found in my grows is it take one more iteration to get just fem seeds. If the plant was a regular, it'll still create some male seeds, but a small percentage, like only 10ish%. If you grow out a female from those seeds and herm that female, then it'll make all fem seeds.
@legalcanada, My thoughts are with you.