Homebrew PCBs

Dennis Waggoner wrote:
 >
 > When its mixed with 3%H2O2 it is even less concentrated. The
 > combination of both generates less fumes. I usually etch outside and
 > you dont even notice the fumes. When you store Muratic Acid. If the
 > lid is not tight fumes will leak out and corrode any metal withing a
 > foot or so. That is the only percaution you need to take storing.
 >
 > When mixing be very carefull not to splatter the mixture into you
 > eyes. Pour the acid into the h2o2 not the h2o2 into the acid. That is
 > the most dangerous part of the operation and there are some very
 > noxious fumes generarated at this point. One again keep you eyes away
 > from the mixture. Use goggle would be the best bet when mixing. And
 > also if you are manually agitating the pcb up and done in the etchand
 > to speed the process again you can generate spatters so watch you eyes
 > here also.
 >
 > Dennis Waggoner

Dennis,
Thanks for the info. I have used NaOH (sodium hydroxide) for making soap 
so I always added that to the water so I understand the reason. I also 
have full face safety shields so I am good there too.
Dave
> _,___