Homebrew PCBs

Phil wrote:
> I never got anything close to 9 minute etches with cucl.  Probably too
> weak.  Dull green was more like olive drab.

If the sun is shining outside, then put it in a plastic tray and let it 
evaporate for a few days. Thats what I did.
Unfortunately you'll have to invest money in a hydrometer if you ever 
want to use CuCl again, otherwise your poking in the dark.


> By the way, I just added a new heater to my tank and did 6 pcbs.  I
> got 5 minute etches on 1 oz, ds boards (2 at a time) with a not so
> fresh solution of AP at 120 F.  not bad at all. 

I admit, its nice to see the PCB being etched when using AP. But I don't 
like fooling around with heaters/heating, so thats why I prefer a room 
temperature etchant. If I had to included the time to heat my tank to 
temperature, then it will take me a *lot* longer to etch a board.