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Post by rockjunquie on Dec 6, 2016 11:54:39 GMT -5
Not content to do pierce work alone, I have taken up some etching. I have done some before, but not in combo with pierce work. What I like is the texture. It is a nice contrast to the high polish on the front side. The only problem is that to make a key ring, I'll have to start with 18g rather than 20 because I like a deep etch which eats about half the thickness of it. This is for my BIL who is an unabashed crazy cat lady. Never mind how scratchy it looks- I have to do the final polish. It does have a very high polish which is a bi**h to photograph.    I cut it and drilled the hole first.... then decided to do the etch so I had to mask the edges and back. Worked very well. I love the texture and I may patina if I can do it without getting it in the front. It's too thin for a pocket keychain now, but quite fine to hang a shed key or something on a rack. I'll have some 18g tomorrow when I'll do some more. My BIL has been trying to etch pcb's. I can't wait for him to see this and say- How the hell did you do that?? |
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Etching
Dec 6, 2016 12:36:54 GMT -5
Post by rockjunquie on Dec 6, 2016 12:36:54 GMT -5
OK, got the patina done and etched another one. The image is after I have removed the resist and nothing more.... yet. I painted on the LOS gel and taped the front.  The red color comes off with a little steel wool.  |
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Etching
Dec 6, 2016 14:03:58 GMT -5
Post by Drummond Island Rocks on Dec 6, 2016 14:03:58 GMT -5
Very cool. Is it all done by masking the area you do not want etched? The paw looks like the etch was brushed on and eats more where it is applied thicker?
Chuck
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Post by Drummond Island Rocks on Dec 6, 2016 14:06:16 GMT -5
We use a similar process on the steel molds we build for auto parts. We have an outside company acid etch the mold so that the plastic parts will have texture.  Chuck |
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Etching
Dec 6, 2016 15:17:59 GMT -5
Post by rockjunquie on Dec 6, 2016 15:17:59 GMT -5
Very cool. Is it all done by masking the area you do not want etched? The paw looks like the etch was brushed on and eats more where it is applied thicker? Chuck Yes, I use a laser printer to transfer lines to copper and then I can saw the lines or use the lines as a mask to etch. The solution is liquid, so I didn't brush it on. It just seems to start at the edges. I left it in for 2 hours. It's a long time but my acid was old and week. I like the deep etch for the random pattern. |
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Etching
Dec 6, 2016 17:10:37 GMT -5
Post by Drummond Island Rocks on Dec 6, 2016 17:10:37 GMT -5
So is the red what it looks like coming out of the acid? I really like these. I will have to do some more research now.
Chuck
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Etching
Dec 6, 2016 17:26:03 GMT -5
via mobile
Post by Deleted on Dec 6, 2016 17:26:03 GMT -5
Wait?
Red is the resist?
What acid solution distance use?
HCl plus H2O2 is great... But you seem to have something simple and awesome!
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Etching
Dec 6, 2016 17:40:36 GMT -5
Post by jakesrocks on Dec 6, 2016 17:40:36 GMT -5
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Post by rockjunquie on Dec 6, 2016 17:51:13 GMT -5
So is the red what it looks like coming out of the acid? I really like these. I will have to do some more research now. Chuck Yes, but you need to rub it off with steel wool. It's reg copper underneath. Here's the video I found helpful, There's another one I have to try to find. edit Here's the other video. It is actually a video clip, but it shows how to suspend the copper in solution. |
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Post by rockjunquie on Dec 6, 2016 17:52:45 GMT -5
Wait? Red is the resist? What acid solution distance use? HCl plus H2O2 is great... But you seem to have something simple and awesome! Red is not the resist. The black laser toner was the resist. Ferric chloride. |
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Post by rockjunquie on Dec 6, 2016 17:53:15 GMT -5
You can use a black sharpie, too. |
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Post by wigglinrocks on Dec 6, 2016 20:58:20 GMT -5
Being a cat person myself , I like it . Very nice . |
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Post by Bikerrandy on Dec 24, 2016 23:36:12 GMT -5
You definitely take it to the next step, you do some cool stuff!!  ... Stop on over if you ever get bored, I still cut and grind rocks almost every minute that I'm home. |
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Fossilman
Cave Dweller 
Member since January 2009
Posts: 20,718 
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Post by Fossilman on Dec 25, 2016 12:04:30 GMT -5
I'm liking that-it's nice to jump into the hobby deeper and deeper............
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icatz
spending too much on rocks
Member since October 2015
Posts: 453 
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Post by icatz on Jan 3, 2017 7:19:19 GMT -5
I don't understand this but I think it's fantastic.
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... Stop on over if you ever get bored, I still cut and grind rocks almost every minute that I'm home. 
