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Post by rockjunquie on Feb 25, 2018 12:46:31 GMT -5
I reuse acetone for soaking things in the small jar I have. It's true the acetone will melt seals, but I have a heavy duty seal on an old pesto jar that has been holding up a long time. And, yeah- it evaporates fast. Place it in your garage of something and leave it open. It'll be gone in no time.
eta- I go through a lot of it, so I buy a big can from the hardware store, keep it outside and refill smaller amounts into an old finger nail polish removal jar for use inside.
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Post by Rockoonz on Feb 25, 2018 13:06:45 GMT -5
Lots of people swear by acetone for cleaning rocks prior to dopping or gluing.
I use isopropyl alcohol, but that's because I get it free.
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on Feb 25, 2018 18:52:03 GMT -5
Dropping a room temp rock in boiling water will almost certainly do exactly nothing. 200°F is nothing.
Give it a go on scraps and see for yourself
Rocks didn't last as long as they did by being super fragile.
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Post by aDave on Feb 25, 2018 19:08:43 GMT -5
Dropping a room temp rock in boiling water will almost certainly do exactly nothing. 200°F is nothing. Give it a go on scraps and see for yourself Rocks didn't last as long as they did by being super fragile. I've had room temp pyrex items shatter on me with only boiling water added - rare, but it's happened to me twice. Most likely due to an imperfection or flaw in the dish. Granted, pyrex is not a rock, but it's designed for heat just the same. Most rocks, I agree, would be no issue. However, Murphy has a funny way of presenting himself every now and then.  |
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Post by spiceman on Feb 26, 2018 2:40:09 GMT -5
I haven't read thru all the posting so this may have already be said.
The acetone might not be getting down into the cracks.
Remove rock from acetone a scrap off loose glue with exacto knife,
Then continue soaking. Repeat that cycle until it comes loose.
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Post by Pat on Feb 26, 2018 12:33:25 GMT -5
spiceman that is what I have been doing, excep i’ve been using a small pocket knife. Just checked for progress. PROGRESS!! Top rock is off. Now just two stuck together. Getting there!
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unclesoska
freely admits to licking rocks
All those jade boulders tossed in search of gold!
Member since February 2011
Posts: 934
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Post by unclesoska on Feb 26, 2018 13:00:53 GMT -5
I haven't read thru all the posting so this may have already be said. The acetone might not be getting down into the cracks. Remove rock from acetone a scrap off loose glue with exacto knife, Then continue soaking. Repeat that cycle until it comes loose. I've used a small paint brush to baste the contact points w/ acetone, just cuz I wasn't patient enough to wait for the soak. Also used putty knives to poke and gently "Pry". Patience Grasshopper! |
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Post by hummingbirdstones on Feb 26, 2018 16:02:43 GMT -5
Glad to hear one came off. There is hope!
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Feb 26, 2018 17:50:10 GMT -5
I'm glad also that things seem to be loosening. Does anyone know whether CabStar aluminum dop sticks are still available anywhere? Those had holes drilled in them that allowed the solvent to get behind the dop head into the center and loosen from both the outside and inside. Worked faster. I can't find an active online link for those, however. |
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Post by Pat on Feb 27, 2018 1:02:11 GMT -5
I haven't read thru all the posting so this may have already be said. The acetone might not be getting down into the cracks. Remove rock from acetone a scrap off loose glue with exacto knife, Then continue soaking. Repeat that cycle until it comes loose. I've used a small paint brush to baste the contact points w/ acetone, just cuz I wasn't patient enough to wait for the soak. Also used putty knives to poke and gently "Pry". Patience Grasshopper! How is basting the contact points better than soaking? I use the pocket knife to poke and pry. This grasshopper is eager to hop! Patient only because I have no other choice. unclesoska |
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unclesoska
freely admits to licking rocks
All those jade boulders tossed in search of gold!
Member since February 2011
Posts: 934
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Post by unclesoska on Feb 27, 2018 2:08:04 GMT -5
I've used a small paint brush to baste the contact points w/ acetone, just cuz I wasn't patient enough to wait for the soak. Also used putty knives to poke and gently "Pry". Patience Grasshopper! How is basting the contact points better than soaking? I use the pocket knife to poke and pry. This grasshopper is eager to hop! Patient only because I have no other choice. unclesoskaI meant basting in addition to the soak. I just found that using the brush every now and then exposed fresh CA to fresh acetone, just goosing the process a bit. I choose a dull putty knife over the exacto due to not having thumbs and putty knife being less lethal. |
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Post by Pat on Feb 27, 2018 21:05:10 GMT -5
This morning, the two pieces were still glued together, so I basted with a brush. The brush bristles were able to go between the two pieces, so I hope that will hurry up the process a bit. Will check in the morning.
Solvent arrived today. BTW Satellite City ca glues start to melt at about 330 degrees F.
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Post by Pat on Feb 28, 2018 16:14:45 GMT -5
 Yippee! The last two pieces separated --- only took 5 days! Glad I have the solvent now, and hope I only make little mistakes with the glue. Sometimes it is best to go back and redo a small mistake instead of going forward "fixing" it, and fixing the fix --- and making a bigger mess. I appreciate all the help. Thanks! |
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Post by hummingbirdstones on Feb 28, 2018 19:25:40 GMT -5
Glad you finally got them separated!
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on Feb 28, 2018 21:14:28 GMT -5
PatIn class we have been putting CA glued items we need seperate into the sand for preheating cabs to be dopped. 3-4 minutes and the different expansion rates destroy the glue physically. Then the glue is sanded/scraped off.
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Post by Pat on Feb 28, 2018 21:35:13 GMT -5
NRG Scott, would you describe your sand setup? Thanks.
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on Feb 28, 2018 21:44:58 GMT -5
NRG Scott, would you describe your sand setup? Thanks. It's a pie tin full of sand sitting on a hot plate. Pretty basic and simple. It's probably 150-160° ETA The freezer did not work. And the sand is used to seperate steel screws from the stone. |
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Yippee! The last two pieces separated --- only took 5 days!
