Homebrew PCBs

derekhawkins wrote:
>>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.
> 
> 
> Just started high school chemistry at around 14 years old....Had this 
> fungus looking mark about the size of quarter on my arm that none of 
> the doctor prescribed ointments could get rid of....Decided to steal 
> some HCL from the chemistry lab one day and dabbed some on the spot 
> that night....It started burning like hell and large pink craters 
> started forming on my skin....Rushed to the bathroom and flooded it 
> with water....Well, the good news is that the fungus went away for good 
> and the bad news is that I have the scars to this very day.
> 
> That episode is in the top five of the dumbest things I ever did as a 
> kid.

I got three darkish moles cut out by the doctor, and the resulting 10mm
wide wounds stitched up. The skin stretches over time so there's little
if any scarring.