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Old 11-30-2006, 11:21 PM   #1
shakindablock
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Default how much pressure can plexiglass withstand?

at work i have access to all types of plexi, what im going to do is build a box with curve to it. what im wondering is, what is the thinnest plexi glass you would with that is serving as a wall to a box holding one MA audio 12?im downfiring the sub so i am going to be able to see the top of it, but i want to make sure the plexi can take the pressure. thanks.


edit-- plexi is only the top , not the sides or bottom.




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Old 12-01-2006, 09:19 AM   #2
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Default Re: how much pressure can plexiglass withstand?

depends on the thickness
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Old 12-01-2006, 12:29 PM   #3
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Default Re: how much pressure can plexiglass withstand?

I have used a large piece of 3/8 plexi for two tens with no problems. But that wasn't a high power application.




I have also used smaller pieces of 3/8 plexi for 3 12's in a ported box with no problems.
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Old 12-01-2006, 12:54 PM   #4
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Default Re: how much pressure can plexiglass withstand?

so are you wanting to make a full box out of plexiglass?
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Old 12-01-2006, 01:27 PM   #5
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Default Re: how much pressure can plexiglass withstand?

Depends on the thickness. The thin stuff won't take much flex before it cracks. I'd look into using lexan instead.
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Old 12-01-2006, 02:57 PM   #6
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Default Re: how much pressure can plexiglass withstand?

no the box with be 3/4" mdf , on bottoms, sides and front and back. its going on the floor between 2 seats, so im going to have a sheet of plexi glass, on the top so you can see down into it. i just need to know if say, 1/4 " plexi will work, or any other sizes, because i have access to them and the thinner they are the more they flex, because its going to bend, not a whole, but lets say if its 2 feet long the starting point will be 8 inches higher than te ending point in a curve, if that makes sense.
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Old 12-01-2006, 03:21 PM   #7
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Default Re: how much pressure can plexiglass withstand?

If you need it to bend that much you may be able to use two layers of 1/4". Or use a thicker piece and heat it to bend it to the shape you need. Just don't get it to hot or it will bubble.
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