Chasm
That is basically hydrochloric acid and peroxide.
Which emits chlorine and hydrogen chloride
Yeah, but the points I am making are:
- It's no better or worse than Ferric Chloride,
when etching.
-
Before mixing, they're harmless Vinegar, H2O2, and salt. Unlike FeCl or HCl.
- A trip to Walmart and about $2.50 is all it takes to start etching at 2 A.M.
- The byproduct is mostly Copper Chloride, which is used as a tree root killer here in the States. Most water treatment plants can easily handle it going down the drain.
- It stays in the separate states until mixed, and it's ridiculously easy to mix: I use an old measuring cap from a jug of liquid laundry detergent and use only what I need - no more, no less.
To add, I've also found some very useful items at local dollar stores:
- Plastic ice tongs (check wedding/party supply aisle) for handling boards.
- Storage containers for the etch tank (like Quinn uses on her blog).
- Gloves, just in case.
- Actual ingredients (H2O2@3%, Distilled White Vinegar, and salt).
- Foam brushes for wiping boards as they etch.
So, for less than the price of the RS kit, you're good to go.
And, as always with chemicals, know WTF you are doing - preferably before you are doing it.
Yes, when mixed, it's nasty stuff. It eats metal for Pete's sake. We get that. The problems I have with FeCl/HCl is availability, price, handling, and safety of a couple of very nosy kids. So far, the only problem with the H2O2/Vinegar has been the long etching time - but that can actually be an advantage!
I endorse Quinn's tutorial, and suggest everyone try it at least once, as they probably have the chemicals lying around anyway. See for yourself. You can just hand-draw something on some scrap board, mix about 2-3 fl. oz. each of the ingredients, add a pinch of salt, and have a go. Afterwards, you can throw in a spoon of baking soda to make sure things are neutralized, if you're paranoid.
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