Homebrew PCBs

Russell Shaw wrote:

> Myc Holmes wrote:
> 
>>Note: Muriatic Acid is a very strong acid and will cause severe burns! Acid
>>burns destroy the tissue are very painful. Definitely use the gloves and eye
>>shield. Keep Baking Soda handy to neutralize any spills. If you get it on
>>yourself, flood, and I mean FLOOD, the area with water or apply a paste of
>>Baking Soda (Sodium Bicarbonate), then FLOOD with water.
>>
>>Muriatic Acid will eat holes in metal, clothing and you. The mist and spray
>>created during bubble etching is very dangerous. Use extreme caution.
>>
>>I like the way the Muriatic Acid / H2O2 etches, but it must be used with
>>respect. The bad habits and sloppiness picked up while using FeCl4 must be
>>unlearned.
>>
>>Myc
>>
>>(former Industrial Chemist)
> 
> 
> HCl is tame stuff if not concentrated enough to be fuming.
> 
> http://en.wikipedia.org/wiki/Hydrochloric_acid
> 
> It stings on wounds like lemon juice or vinegar.
> 

I know a guy who'd dunk his whole hand almost to the elbow when 
retrieving a PCB from his heated ammonium persulfate bubble etcher.