Homebrew PCBs

http://www.p-m-services.co.uk/pcb_etch.htm

please read at the very bottom.

This is not the page i remember, as it doesn't say much about fecl 
regenerating.
But the interesting thing it they use lead or graphite anodes.



the sulphuric acid is in my opinion the choice if one wants to make tin 
masked pcbs.


st

if you please also have a look at

http://www.proplate.com/tin-plating.htm
mostly to read this sentence:
"Tin and its salts are reported to be non-toxic and non-carcinogenic and 
are approved for food container and food contact applications. "

So i guess I was right that tin electroplating is much safer than tin 
electroLESS plating.