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Post by radio on Oct 8, 2014 19:40:37 GMT -5
I need to unmount a stone I was told that was held in by 330 epoxy. I know heat will often work, but I don't want to risk it on this piece
I also know that Attack is highly touted, but I don't have time to wait for delivery and no local sources.
I do have both Naptha and paint thinner on hand. Will either of those work in a pinch?
Thanks
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spiritstone
Cave Dweller
Member since August 2014
Posts: 2,061
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Post by spiritstone on Oct 8, 2014 19:50:47 GMT -5
Acetone works very good. Ladies hand polish remover.
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Post by rockjunquie on Oct 8, 2014 20:28:07 GMT -5
You can get 100% acetone sold as fake nail remover, too. Reg nail polish remover is not as strong. I use the pure for everything. We go through enough that I might get a big can at the hardware store next.
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Post by Pat on Oct 8, 2014 20:42:15 GMT -5
White vinegar removes a lot sticky gluey things. I've used it on various jewelry pieces successfully , though I don't know what the adhesive was.
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QuailRiver
fully equipped rock polisher
Member since May 2008
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Post by QuailRiver on Oct 8, 2014 21:23:18 GMT -5
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Deleted
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Post by Deleted on Oct 9, 2014 11:27:13 GMT -5
Question: If a stone is epoxy glued onto a painted surface.. say a car body.. and one used acetone etc.. would this damage the surface/paint?.
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spiritstone
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Member since August 2014
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Post by spiritstone on Oct 9, 2014 11:45:09 GMT -5
Question: If a stone is epoxy glued onto a painted surface.. say a car body.. and one used acetone etc.. would this damage the surface/paint?. yep
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Don
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He wants you too, Malachi.
Member since December 2009
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Post by Don on Oct 9, 2014 11:47:54 GMT -5
acetone would also be my recommendation.
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Deleted
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Post by Deleted on Oct 9, 2014 12:05:23 GMT -5
I know sounds crazy.. but back when we had our 99 jeep, and I painted it camo.. I actually used small stones as part of the camo theme.. create texture and depth. In other words making it appear like a stream with a glaze of water effect..
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Post by radio on Oct 9, 2014 22:04:22 GMT -5
Used the naptha and got the stone out. It didn't dissolve the epoxy real well, but enough to loosen it
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Deleted
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Post by Deleted on Oct 10, 2014 17:44:53 GMT -5
before or after cure? After cure is a real bear. Acetone will not even touch it. The epoxies are phenolics. Once hardened phenolics are almost forever. I have had good luck using a stripper called "aircraft remover".AC contains both methylene chloride (nasty stuff!) AND ammonia/amines. Those in combination will take the epoxy apart and allow for removal. Even then, the epoxy will be difficult to remove. radio is your substrate ammonia safe?
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Post by radio on Oct 10, 2014 18:18:16 GMT -5
before or after cure? After cure is a real bear. Acetone will not even touch it. The epoxies are phenolics. Once hardened phenolics are almost forever. I have had good luck using a stripper called "aircraft remover".AC contains both methylene chloride (nasty stuff!) AND ammonia/amines. Those in combination will take the epoxy apart and allow for removal. Even then, the epoxy will be difficult to remove. radio is your substrate ammonia safe? After cure. The Naptha did not dissolve the epoxy or even gel it. I gently pried the bezel away from the stone and let it soak about 15 minutes. It could be that the epoxy didn't have a good bond to the backing to begin with as it popped out pretty eaisly
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Deleted
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Post by Deleted on Oct 10, 2014 22:16:11 GMT -5
Naptha is essentially gasoline ++. That is not going to do a thing to epoxy except make it stink.
"Aircraft remover" will make the epoxy gel up and able to be scraped away. I cannot speak as to what it will do to sterling silver.
Aircraft Remover is the single nastiest solvent I have ever worked with (and I worked in a solvent recycling center!) Wear gas mask, and research the appropriate gloves to use, do it outside and be very careful, that sh|t is n@sty! Methylene penetrates most rubber glove materials, making your skin BURN!!
In hindsight, there are very few rocks I would even consider using aircraft remover on. Just not worth the hastle. Even the few dollars worth of sterling ain't worth it. Gold? Yeah, I'll recover the gold using this product.
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ziggy
spending too much on rocks
Member since June 2016
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Post by ziggy on Dec 4, 2016 21:51:02 GMT -5
Naptha is essentially gasoline ++. That is not going to do a thing to epoxy except make it stink. "Aircraft remover" will make the epoxy gel up and able to be scraped away. I cannot speak as to what it will do to sterling silver. Aircraft Remover is the single nastiest solvent I have ever worked with (and I worked in a solvent recycling center!) Wear gas mask, and research the appropriate gloves to use, do it outside and be very careful, that sh|t is n@sty! Methylene penetrates most rubber glove materials, making your skin BURN!! In hindsight, there are very few rocks I would even consider using aircraft remover on. Just not worth the hastle. Even the few dollars worth of sterling ain't worth it. Gold? Yeah, I'll recover the gold using this product. Where my husband used to work they used Aircraft remover to dissolve two part epoxy paint that was used to paint their machines when a part that was machined got painted by accident. He said that stuff is strong enough to burn your skin clean off.
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Post by toiv0 on Dec 5, 2016 6:21:54 GMT -5
Glad to hear you got it out, should have ran out and got a lotto ticket.
This is one reason I very very rarely glue a stone in. If a person had glued a stabilized peice of Turquoise, Rainbow calsilica, or Fordite would the solvent also disolve that manmade stone you want to remove.
Glueing and people using solder to try and fill gaps is why I always take a picture of a repair of sterling jewelry in case I have to recreate it. There is also a disclaimer that says no guarantee. Its heartbreaking when you hit something with the torch and it falls apart because someone used soft solder where hard solder was called for. I have seen where people actually used lead solder.
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Deleted
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Post by Deleted on Dec 5, 2016 10:52:23 GMT -5
Naptha is essentially gasoline ++. That is not going to do a thing to epoxy except make it stink. "Aircraft remover" will make the epoxy gel up and able to be scraped away. I cannot speak as to what it will do to sterling silver. Aircraft Remover is the single nastiest solvent I have ever worked with (and I worked in a solvent recycling center!) Wear gas mask, and research the appropriate gloves to use, do it outside and be very careful, that sh|t is n@sty! Methylene penetrates most rubber glove materials, making your skin BURN!! In hindsight, there are very few rocks I would even consider using aircraft remover on. Just not worth the hastle. Even the few dollars worth of sterling ain't worth it. Gold? Yeah, I'll recover the gold using this product. Where my husband used to work they used Aircraft remover to dissolve two part epoxy paint that was used to paint their machines when a part that was machined got painted by accident. He said that stuff is strong enough to burn your skin clean off. His experience mirrors mine. There is no possible way any human could think otherwise!! It is methylene chloride with a bunch of ammonia compounds.... that combination is what 'barely' attacks the epoxy. It takes quite some time to break the epoxy down....
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Tommy
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Post by Tommy on Dec 5, 2016 17:40:07 GMT -5
I have had good luck using a stripper called "aircraft remover". I'm sure that was just her stage name.
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Post by radio on Dec 5, 2016 18:15:17 GMT -5
I have had good luck using a stripper called "aircraft remover". I'm sure that was just her stage name. LOL! I remember the old HBO show "Cathouse" that had a gal called Airforce Amy. No idea how that became attached to her, but she sure was pretty! Back to the subject though, the stone did release from the bezel cup with a little persuasion. I took the stone to the Cab King and ground away the epoxy, backed it with Devcon liquid steel, repaired the mount and re set the stone. Happy customer, happy life. I need to charge more for repairs .
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Deleted
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Post by Deleted on Dec 5, 2016 19:36:42 GMT -5
I'm sure that was just her stage name. LOL! I remember the old HBO show "Cathouse" that had a gal called Airforce Amy. No idea how that became attached to her, but she sure was pretty! Back to the subject though, the stone did release from the bezel cup with a little persuasion. I took the stone to the Cab King and ground away the epoxy, backed it with Devcon liquid steel, repaired the mount and re set the stone. Happy customer, happy life. I need to charge more for repairs . Seems a price increase is long over due. your knowledge and abilities seem to support this. I will predict that your dollar and units sold volume will both increase with slight higher prices. Amy was actually in the air force.
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