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Old 07-08-2011, 08:41 AM
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Drag Car windows

I'm looking for some ideas on how to mount lexan windows that can be quickly removed. The side windows will be attached to a fiberglass door. Can lexan be manipulated with heat? Is there a glue that will reliably attach lexan to itself?

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Old 07-08-2011, 09:59 AM
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Might want to try Plexi-glass instead. Lexan is very hard and cracks easy. Plexi-glass is more forgiving and costs a whole lot less than Lexan.
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Old 07-08-2011, 10:10 AM
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The above post is backwards, Lexan is haetable and can be formed in a press brake and cut on a sheare.On the other hand plexi-glass is lower cost but brittle and will chip, crack and is not formable.
I have worked with this stuff for years. For adhearing Lexan I use clear silicone. I have made machine guards and even bullet proof windows with Lexan.For auto windows you can get it with a harder finish outer coating but still requires gentle cleaning.
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Old 07-08-2011, 10:11 AM
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Quote:
Originally Posted by sqzbox
Might want to try Plexi-glass instead. Lexan is very hard and cracks easy. Plexi-glass is more forgiving and costs a whole lot less than Lexan.
My experience is a bit different Bending Lexan in a sheetmetal brake is no problem (warm weather, not sure about the dead of winter).
Lexan costs quite a bit more than Plexiglass, at least it does around here.
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Old 07-08-2011, 10:14 AM
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Quote:
Originally Posted by sqzbox
Might want to try Plexi-glass instead. Lexan is very hard and cracks easy. Plexi-glass is more forgiving and costs a whole lot less than Lexan.
I've used both lexan (polycarbonate) and Plexi-glass for a variety of projects over the years. I've found polycarbonate to be more resistent to cracking than plexi-glass. In addition, polycarbonate tends to bend rather than shatter into sharp shards like plexi-glass. Yes polycarbonate is more expensive, but well worth it with the safety factor.
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Old 07-08-2011, 10:38 AM
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I have built aquariums from sheets of lexan using methylene chloride. It is a solvent rather than a glue. It bonds the two pieces together into a single piece, rather than just sticking them together. It takes a little skill to use, but it is the way to go.
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Old 07-08-2011, 11:30 AM
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Quote:
Originally Posted by nofearengineer
I have built aquariums from sheets of lexan using methylene chloride. It is a solvent rather than a glue. It bonds the two pieces together into a single piece, rather than just sticking them together. It takes a little skill to use, but it is the way to go.
Can you advise if methylene chloride would be available locally? Do you need to take any protective measures?
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Old 07-08-2011, 12:23 PM
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You can usually buy it at the place where you buy your lexan from.
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Old 07-08-2011, 01:20 PM
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Originally Posted by nofearengineer
You can usually buy it at the place where you buy your lexan from.
They don't carry it. They recommended a product named Weld On, but no one seems to handle it.
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Old 07-08-2011, 05:01 PM
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Wow....it seems the greenies have really taken over since I built my last aquarium. I guess you can't just buy it at the local place any more. It is still available online.

http://www.enasco.com/product/KM01075M

The best way I found to apply it with is with a syringe or needle-nose applicator bottle. It is fluid...no viscosity at all.
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