Homebrew PCBs

On 5/18/07, Adam Seychell <a_seychell@...> wrote:
> I put the FeCl3 etchant directly in the microwave oven. Much more
> efficient in both time and energy. Strangely, the liquid does not seem
> to be conductive enough to cause excessive localized heating on the
> plasticware.

Weird, I had the exact opposite experience. I put a 16 oz bottle of
fairly fresh FeCl3 in a microwave (with no turntable). Within a couple
seconds of turning on the microwave, the etchant was boiling around
the meniscus, and started to melt the plastic bottle. Fortunately I
stopped the microwave before the bottle had a chance to spring a leak.

Cheers,
- Jan