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Post by rockjunquie on Feb 6, 2014 12:48:48 GMT -5
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Post by 1dave on Feb 6, 2014 14:09:40 GMT -5
I think they try to leave it in for around an hour, but that looks good to me!
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Post by connrock on Feb 7, 2014 11:12:14 GMT -5
I can't help with your etching question but I love you creative design! connrock
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Post by pghram on Feb 7, 2014 12:07:58 GMT -5
I think it looks perfect. I really like how you continued the pattern of the stone onto the back plate. Will you attach the stone with a bezel?
Rich
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GeorgeStoneStore
starting to spend too much on rocks
Member since November 2011
Posts: 168
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Post by GeorgeStoneStore on Feb 7, 2014 12:15:00 GMT -5
Slightly fluid to be heated. But maximum to 20-30 Celsius degrees. You can accelerate the chemical reaction
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Post by rockjunquie on Feb 7, 2014 13:32:21 GMT -5
Thanks GeorgeStoneStore That's what my husband was saying. In his hobby, people talk about using an aquarium heater to keep it warm. I was hoping to avoid that. I saw lots of videos and in those projects the etch was deeper faster at room temp. Which made me wonder if my acid was too weak. It is regular PCB etchant from an electronics store.
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Post by rockjunquie on Feb 7, 2014 13:35:42 GMT -5
pghram Yes, the stone bezel will fit so that the lines in the stone and backplate line up. I already have it done and have the bail on. I will do some more finishing work and put some los on it. I think it may just turn out nice, but it a ways to go. .
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GeorgeStoneStore
starting to spend too much on rocks
Member since November 2011
Posts: 168
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Post by GeorgeStoneStore on Feb 7, 2014 13:46:25 GMT -5
Thanks GeorgeStoneStore That's what my husband was saying. In his hobby, people talk about using an aquarium heater to keep it warm. I was hoping to avoid that. I saw lots of videos and in those projects the etch was deeper faster at room temp. Which made me wonder if my acid was too weak. It is regular PCB etchant from an electronics store. Carefully . This blend material etchant (acid) enormously rapidly oxidized almost all metals. In particular, iron, aluminum, copper. Only use a heater, that has a ceramic coating or glass is
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Post by pghram on Feb 7, 2014 14:11:25 GMT -5
Wow, that's coming along really nice!
Rich
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Post by Rockoonz on Feb 7, 2014 14:26:56 GMT -5
It will help if you stand your copper piece on edge and use vibration or air bubbles to agitate the etch. The problem with using ferric chloride and etching deeper is it will undercut, etch the copper beneath your resist. adding citric acid helps with the undercutting, called Edinburgh etch. www.polymetaal.nl/beguin/mape/edinburgh_etch.htm
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Post by rockjunquie on Feb 7, 2014 17:39:51 GMT -5
Great link!!! Thank you. What a good resource. That was bookmarked. It looks scary, though. I don't want to blow myself up or go blind. LOL!
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