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How to cut Plexiglass
There is a big difference between Lexan and plexiglass. Plexiglass breaks very easily particularly in thinner sections. Around 1/8" thick Plexiglass may fracture while you are trying to saw or drill.
Most windshields that I've seen on ATV and RTV's have been made from 1/8" thick Lexan. Lexan is more expensive but will last, particularly with bumps, jarring and vibration from your application. Like Earthworks says, boy 1/2" thick is heavy!
Lexan can be drilled and sawn easily. In more static situations we even tap it at times for machine guards, etc.
All of the above scratch easily so care should be taken when cleaning to not rub dirt in. Some glass cleaners also shouldn't be used. Read directions of cleaners first before applying.
When sawing you want very fine teeth and don't push it hard. I also like to mount them using rubber grommets so you don't stress crack it. Stay in a ways from edges. If you can't find grommets locally, like your hardware store, etc. go to McMaster-Carr (mcmaster.com).
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How to cut Plexiglass
When you purchase either of them, they should have a paper or plastic skin on them to prevent scratches in handling. It should say what it is.
After you do your cutting, etc. you peel it off.
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How to cut Plexiglass
We bend Lexan at our shop frequently using a brake. You don't need to heat it if you are doing a 45 or 90 degree bend. When room temperature you only get one shot at it and need to slightly go beyond the angle since it has some springback. You can't roll it to make a curved surface or bend a large radius in it at the bend. Sometimes it does break for no apparent reason. Heat may help you do some more exotic bends, etc. - haven't tried it myself.
Yes it is soft. Lexan like Plexiglass are tradenames. Lexan is commonly the material used on Bug Shields and have lots of give and flex capabilities even in a broad temperature range. You do need to smooth all corners and edges to avoid a place for a crack to start.
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