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SpudFiles Forum Index » Construction Materials/Ammo Discussion » Removing covering from perspex?
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inonickname
PostPosted: 02/25/2010 3:49 AM    Post subject: Removing covering from perspex? Reply with quote

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I have two 30cm diameter perspex disks which I just cut using a jig I made. Unfortunately, the perspex I made was donated to me. It is fairly old, and has been in the sun for quite a while. Some of it (small sections) will peel away, while larger pieces wont. I've tried using solvents and a strip of metal to remove it but haven't really gotten good results.

The covering is the papery kind (now the thin layer of LDPE like on some kinds). Any ideas on how to remove this cleanly? The solvents (turps, metho etc.) will get rid of leftover adhesive, but aren't really helpful in peeling of the layers of covering.

Thanks guys

(Incase you're interested, the disks are for a wimhurst generator I'm making).
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jimmy101
PostPosted: 02/25/2010 12:59 PM    Post subject: Reply with quote

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You might try just letting it soak in the solvent for a couple days. Straight water might work to remove the paper if given enough time. Then follow up with methanol or some other solvent (that doesn't melt the plastic).

Put'm in a big ziploc bag with a pint or two of solvent and wait.
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jrrdw
PostPosted: 02/25/2010 13:32 PM    Post subject: Reply with quote

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Heatgun or maybe a hair dryer then get under it with a scraper tool???
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IMagius
PostPosted: 02/25/2010 15:32 PM    Post subject: Reply with quote

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If Lighter Fluid won't seep into the edges and loosen the bond, I'd try boiling them. It works on every label on any type of Jar or whatever else I've ever tried to clean up. 5 to 10 minutes in a nice rolling boil and it usually loosens thigns right up - just make sure they aren't on the very bottom of the Pot. Temps of 100C shouldn't harm the perspex either.
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