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Registered Member #2901
Joined: Thu Jun 03 2010, 01:25PM
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Posts: 837
Patrick wrote ...
Pinky's Brain wrote ...
I assume aerating hydrochloric acid is something you do in a well ventilated area?
Yes, out in an abandoned parking lot.
I have to go to the parking lot to drink a beer now? :)
Anyway, I think I'll try the sponge method with Ferric Chloride and citric acid (Edinburgh etch) next time I have something to etch ... don't feel like messing with muriatic acid and hydrogen peroxide and avoiding having a tank full of chemical waste just waiting around to make a giant mess is attractive.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Pinky's Brain wrote ...
Patrick wrote ...
Pinky's Brain wrote ...
I assume aerating hydrochloric acid is something you do in a well ventilated area?
Yes, out in an abandoned parking lot.
I have to go to the parking lot to drink a beer now? :)
Anyway, I think I'll try the sponge method with Ferric Chloride and citric acid (Edinburgh etch) next time I have something to etch ... don't feel like messing with muriatic acid and hydrogen peroxide and avoiding having a tank full of chemical waste just waiting around to make a giant mess is attractive.
I dont think the HCl weakens all that nuch though, so it lasts much longer. now that ive got some darker green present it doesnt evolve nearly as much Cl. maybe the vapors are just present for the start of the solution. If to much Cl leaves then the HCl must be weakening, and that doesnt seem tobe the case once Cu ions build up.
Does everyone use the 2 parts peroxide : 1 part HCl proportions? (of 3% : 31%). i see that one show up on websites alot. But i try not to trust the internet to much.
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Announcement: I am now using HCL + H2O2 (aq)....
