about an alternative to ferric cloride, acid cupric cloride. It is easier to buy, since all you are doing is mixing 2 parts oxygenated water with 1 part muriatic acid/HCl (@33%), which can be obtained at any hardware store. It shares the same problem with Ferric Cloride: after etching, the resulting solution is hazardous and should be disposed accordingly (€€/$$).
I've done this at home just like the original article but with this other solution and after 3-4 tries got pretty good results. Good enough for some basic SMD circuits.
I'm in Portugal so I can't comment on your experience. In here one can get it at any 'mom&pop' hardware store, which are more common than 'Home Depot' style stores.
about an alternative to ferric cloride, acid cupric cloride. It is easier to buy, since all you are doing is mixing 2 parts oxygenated water with 1 part muriatic acid/HCl (@33%), which can be obtained at any hardware store. It shares the same problem with Ferric Cloride: after etching, the resulting solution is hazardous and should be disposed accordingly (€€/$$).
I've done this at home just like the original article but with this other solution and after 3-4 tries got pretty good results. Good enough for some basic SMD circuits.