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post #1 of 12 (permalink) Old 09-15-2014, 11:30 PM Thread Starter
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Glass Question

Ok so I'm in the planning stages of a plywood large tank. I have a sliding glass door that one of the doors glass is bad but the other door is fine. Can I cut that glass down and use it for the front glass in a Plywood tank???
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post #2 of 12 (permalink) Old 09-16-2014, 12:08 AM
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Depend on how big and deep the tank will be but my guess is it wont be thick enough unless its for a vivarium
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post #3 of 12 (permalink) Old 09-16-2014, 12:14 AM Thread Starter
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whats a good rule of thumb on how to determine the thickness I need?
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post #4 of 12 (permalink) Old 09-16-2014, 01:11 AM
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Check if it is tempered before you do anything with it.


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post #5 of 12 (permalink) Old 09-16-2014, 01:32 AM
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Check if it is tempered before you do anything with it.
I came here to say this. I got a piece of sliding glass door for free and it was tempered. Had to drive it to the dump myself because no one would touch it. Stated that if I tried to cut it myself it would just shatter, so pretty much useless. If it's coming from a sliding glass door chances are that it is tempered and therefore useless if you want to cut it.
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post #6 of 12 (permalink) Old 09-16-2014, 08:13 AM
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Smile It Has A Temoer

What psych and Vanish said.

If it is a glass door manufactured in the last 60-years, it is tempered, therefore unacceptable for your purposes.

Calculating glass thicknesses and safety factors is not difficult and there are a number of online calculators available.

Joe
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post #7 of 12 (permalink) Old 09-16-2014, 11:09 PM
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I came here to say this. I got a piece of sliding glass door for free and it was tempered. Had to drive it to the dump myself because no one would touch it. Stated that if I tried to cut it myself it would just shatter, so pretty much useless. If it's coming from a sliding glass door chances are that it is tempered and therefore useless if you want to cut it.
If you had to dispose of it, why not just break it, and then sweep up all the bits and put in a bucket? If nothing else it would be entertaining to watch it shatter.
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post #8 of 12 (permalink) Old 09-17-2014, 03:18 PM
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If you had to dispose of it, why not just break it, and then sweep up all the bits and put in a bucket? If nothing else it would be entertaining to watch it shatter.
I agree. Dispose of it at home. I found out how cool tempered glass breaks by accident. I was cutting down a panel from a 12 year old 55g tank in which I thought only the bottom was tempered. I wish I had attempted the cut on the ground and on a large sheet of plastic though. It literally exploded into thousands of pieces. It was cool but I was more pissed that I had a mess to clean up right away in which I didn't have time to deal with at the time.

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post #9 of 12 (permalink) Old 09-17-2014, 05:53 PM
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ouch. I used to love collecting the little bits of broken tempered glass as a kid.

I don't know the specifics, I'd have to google it, but there is a way to tell if glass is tempered using a pair of polarized lenses. I just kept a couple of the glasses after watching a 3-D movie for a cheap polarized lens.
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post #10 of 12 (permalink) Old 09-18-2014, 12:59 AM Thread Starter
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ok well guess the door is going to the land fill. thanks everyone
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post #11 of 12 (permalink) Old 09-18-2014, 02:12 AM
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ouch. I used to love collecting the little bits of broken tempered glass as a kid.

I don't know the specifics, I'd have to google it, but there is a way to tell if glass is tempered using a pair of polarized lenses. I just kept a couple of the glasses after watching a 3-D movie for a cheap polarized lens.
I read a few articles in the past myself for checking to see if glass is tempered. You indeed need polarized glasses. Its easier to check on a automobile in daylight to get an example on what your looking for. You are looking for the checkerboard pattern criss cross pattern. Its harder to do on tank glass indoors because chances are you won't have sufficient lighting. I do own several pair of passive and active shutter 3d glasses. I just didn't bother going to get them, lol.

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post #12 of 12 (permalink) Old 09-23-2014, 08:56 PM
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you can't cut it. but you can apparently tape the edges and get it to shatter and use it as a table top

https://www.youtube.com/watch?v=VzgUA2XSfj8


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