7 Sep
2005
7 Sep
'05
5:51 p.m.
Do the
developer and/or stripper usually turn out to be some commonly
(cheaply) available chemical? I would prefer to avoid paying $6+ for a
small bottle if I can avoid it.
One kg of ammonium persulfate will make 4 liters of etchant, and it's
around $18 USD (not including shipping) - not sure if you'll be able to
find it much cheaper than that, but if you do, let everyone here know! ;-)
The other chemical used is ferric chloride.