Homebrew PCBs

kevinmwolf@... wrote:
> 
> 
But when I did, I would etch my
> boards in a shallow pyrex dish. I had great success with microwaving the 
> entire setup- dish, board and all in the microwave. No sparks, fires or 
> splashes. Usually cooked for ~1 min. to get reasonably hot.
 > ...

I've had the same experience, no sparks , boiling, or fizzing of any 
description when microwaving concentrated ferric chloride, in a open 
plastic ice-cream container. My only concern is having my head too close 
above the container of steaming etchant while stroking a paint brush 
over the PCB. I've done the same with ammonium persulfate.
Gloves are mandatory.