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hp246 07-08-2011 08:41 AM

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?

sqzbox 07-08-2011 09:59 AM

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. :D

oldschool hero 07-08-2011 10:10 AM

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.

aisr 07-08-2011 10:11 AM

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. :D

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.

hp246 07-08-2011 10:14 AM

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. :D

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.

nofearengineer 07-08-2011 10:38 AM

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.

hp246 07-08-2011 11:30 AM

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?

nofearengineer 07-08-2011 12:23 PM

You can usually buy it at the place where you buy your lexan from.

hp246 07-08-2011 01:20 PM

Quote:

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.

nofearengineer 07-08-2011 05:01 PM

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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