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Subject: How to un-glue Cork? rss

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Eric Pietrocupo
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I have a board mounted on a sheet of cork and I want to un-glue it to stick it again on cardboard.

The mount is composed of:

Adhesive book plastic over
Printed cardboard over
sheet of cork

I tried using a steam iron on the back of the board and it worked. The cork grow and ripples while melting the glue and the print out can be easily removed slightly curved.

Now I have realized that in my set, there was 2 type of cork. The 2nd type of cork is much smaller and tighter. When I try to use the same technique, it's the opposite that happens: The cork shrink and the print out ripples. The print out is very hard to remove and the process makes it strongly damaged (impossible to reuse)

I don't understand why 2 size of cork would have 2 different behaviors. But does anybody have any other ideas on how I could remove the print outs?

Another solution I thought would be to pass the iron over the plastic surface and disable the steam. Maybe use a cloth between the iron and the plastic. The problem is that I am not sure how much heat can the plastic withstand before melting. It's book plastic so it is pretty solid. If the platic could resist the heat, maybe the glue will melt before the cork has a chance to shrink?

What do you think?

Any other ideas?

Thank You
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Chuck Meeks
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You might want to try a hairdryer on high heat first. Not as hot as an iron but I have had pretty good success loosening all kinds of adhesives with using a hair dryer. It may take longer than usual for the heat to penetrate the cork but you can control the heat easier than using an iron. Good Luck!
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Eric Pietrocupo
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Well the advantage of the air dryer could be that I can spray on the plastic surface without risk of plastic meltdown. It might unglue it before the cork has a chance to shrink.
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Have you tried using http://www.goofoffstainremover.com/?

Dunno if it will work on cork but I have use it before to remove glue and glue stains.
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Eric Pietrocupo
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This is usefull to remove glue residue at the surface. My glue is between the cardboard and the cork. I cannot inject glue remover between the 2 layers.
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Eric Pietrocupo
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I tried using an air dryer, it does not work well. When a bit of cardboard was peeled, I put the air directly between the cork and the card board and it did not do anything.

I tried using an iron directly on the plastic without steam. It does not un-glue anything. If the iron is too hot, it melt the plastic. So I think it was really the steam that did the job.

Now I have tried to freeze it. I also does not work well. It seems to help a bit in breaking the glue, but most of the time the cardboard tear up.

Maybe I could use a 2 step process. Freeze first, steam afterward.

Any other ideas?
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Lighter fluid is the best by far and does not damage the paper. I use it to remove miles of tape and stickers from thrifted games without damaging the box below.
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Did you ever figure this out? I'm thinking about trying to remove the cork (for other use) from an old cork board if there is a decent enough way.
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Eric Pietrocupo
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No I have not. Like I said, I seem to have used 2 different kind of cork. Or type worked perfectly with a steam iron, the other one did not work at all. So you might try with a steam iron.
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