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Etching
Jan 6, 2014 11:52:10 GMT -5
Post by 1dave on Jan 6, 2014 11:52:10 GMT -5
Something I have done in wood and want to try in metal.
Cover the surface with wax, place negative on it, shine a hot light above until the wax melts away from the dark spots, put acid in the hollows until etched to the desired amount. Wash with water and baking soda.
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Post by gr on Jan 6, 2014 14:08:38 GMT -5
sounds interesting! I have so many ideas now that I may be 85 years old before I can get to this one My casting unit is collecting all the airborn sawdust from the wood shop side of the shop
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Etching
Jan 6, 2014 22:56:10 GMT -5
Post by 1dave on Jan 6, 2014 22:56:10 GMT -5
sounds interesting! I have so many ideas now that I may be 85 years old before I can get to this one My casting unit is collecting all the airborn sawdust from the wood shop side of the shop Been there, doing that!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Jan 6, 2014 23:02:10 GMT -5
It is a form of mental health to want to do stuff. If you ever stop then the trouble starts. My experience
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quartz
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breakin' rocks in the hot sun
Member since February 2010
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Post by quartz on Jan 7, 2014 0:34:51 GMT -5
Dave, you said "place negative on it". What does this mean? Please explain meaning of term.
Larry
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Post by kk on Jan 7, 2014 3:56:07 GMT -5
I presume Negative is the shape you want dublicated. As the heat will not penetrate the surface underneath to the extend of the exposed areas, it should be save/er from melting away and hence giving you the desired shape.
Could be absolutely wrong with that; but thats how I understand what was said.
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Etching
Jan 7, 2014 15:24:09 GMT -5
Post by 1dave on Jan 7, 2014 15:24:09 GMT -5
In making circuit boards they use a material called (if I remember right from 1980) "photo resist." Whatever it is, you can buy it at Radio Shack. Some people use it to etch their name and logo into the knives they make! Going the cheap rout, wax and "black blotter paper" works well. Cut out the shape you want, turn on the heat lamp, and the blotter soaks up the unwanted wax. You can also scratch in you name and designs.
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Etching
Jan 7, 2014 16:47:40 GMT -5
Post by 1dave on Jan 7, 2014 16:47:40 GMT -5
I just checked Sharr's "Creative Gold and Silversmithing" book. Chapter 20 starts on P. 185. She says to "coat all areas of the metal that are not to be etched with black asphaltum varnish. Thin with turpentine www.farwestpaint.com/Catalog/A-A-1632.htm
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Deleted
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Post by Deleted on Jan 7, 2014 16:54:18 GMT -5
you can successfully, selectively etch copper by transferring the "ink" from a laser printer onto the copper.
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Deleted
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Post by Deleted on Jan 7, 2014 17:01:55 GMT -5
I should also point out the star of that video is Super Awesome Sylvia - inventor of the Watercolorbot a CNC water color painting machine. That young lady has a brilliant future ahead of her. Rock on Super Awesome Sylvia!
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Deleted
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Post by Deleted on Jan 7, 2014 17:07:17 GMT -5
Also, my kidlet uses "embossing powder" to make raised embossed figures on greeting cards ($24 a dozen if ya have to know lol). She stamps a thin glue solution onto paper and while it's still tacky she powders the embossing powder onto the glue. It sticks, she then pours off the excess and heats the stuck powder with a little heat gun. It melts onto the paper.
I have learned the embossing powder is powdered hot glue. I have also learned to make my own thin glue by watering down white glue. It might dry faster is alcohol is used here.
Apply this powdered hot glue to any surface, heat to adhere, etch and wash away with alcohol. Hot glue is super soluble in alcohol
She has tons of stamps, maybe I can start enameling copper!.
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Deleted
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Etching
Jan 7, 2014 17:11:42 GMT -5
Post by Deleted on Jan 7, 2014 17:11:42 GMT -5
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Post by rockjunquie on Jan 7, 2014 17:12:33 GMT -5
Thanks @shotgunner!
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Deleted
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Post by Deleted on Jan 7, 2014 17:23:07 GMT -5
Con mucho gusto. In English, it is my pleasure.
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Post by rockjunquie on Jan 7, 2014 17:28:15 GMT -5
Also, my kidlet uses "embossing powder" to make raised embossed figures on greeting cards ($24 a dozen if ya have to know lol). She stamps a thin glue solution onto paper and while it's still tacky she powders the embossing powder onto the glue. It sticks, she then pours off the excess and heats the stuck powder with a little heat gun. It melts onto the paper. I have learned the embossing powder is powdered hot glue. I have also learned to make my own thin glue by watering down white glue. It might dry faster is alcohol is used here. Apply this powdered hot glue to any surface, heat to adhere, etch and wash away with alcohol. Hot glue is super soluble in alcohol She has tons of stamps, maybe I can start enameling copper!. Yes, I vote you start enameling copper. Seriously, I'd love to see it. Does any of this stuff work on silver, too.?
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Deleted
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Post by Deleted on Jan 7, 2014 17:36:36 GMT -5
Except for the Sylvia video of etching copper, all of my posting here is speculative. It just seems in my head that it simply must work! If it works on copper it'll work on silver. It has too, he speculates!
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Etching
Jan 7, 2014 18:09:07 GMT -5
Post by 1dave on Jan 7, 2014 18:09:07 GMT -5
Acid etching will work with any metal except gold which is too snooty to associate with all but the strongest of acids.
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