Homebrew PCBs

Roger Blair wrote:
>  
> 
> Stefan,
> 
> Yes, there is. Finally after half a dozen different places that only 
> sell 10% HCl, or muriatic acid "replacement" , today I finally
> found a bona fide single purpose pool supply establishment that still 
> carried 2 gallon packs of 32% (Muriatic Acid) HCl for $11,
> same price as the 10% stuff. Several Chemical supply outlets I tried 
> would not sell hazmat to individuals, or wanted $25 or more for
> hazmat shipping charges on top of up to $138 for 37% stuff. I'm going to 
> try the 32% HCl.
> 
> Thanks everyone for the help,
> 
> Roger

Just a note, 32%(wt) HCl is still "concentrated". You'll be hard pressed 
finding %40 HCl because vapour pressure is so high that the HCl gas will 
quickly escape, then slowing down as concentration drops to more a 
stable %35~%30 (wt).

Also note your post subject line is contradictory.