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Hi all.

At my work, we're throwing away several large mirrors from rear projection systems. They're first-surface mirrors and measure at least 4' x 5' and they're in metal frames. I'd guess they're 1/4" thick.

I was wondering if there's a reason these wouldn't be good to scavenge for making smaller mirrors for around the house. Optically, they're great, but they're delicate.

Has anyone ever used these that could offer an opinion?

Thanks.
 

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They are great mirrors as mirrors go because the silver is on the front side of the glass. However, they are very prone to scratches from cleaning and will most likely not last long under the normal household use.

They are great for bouncing light around since there is no distortion from the glass.
 

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Although they're first surface mirrors, they may have a durable coating that could make them feasible for home use. I'm familiar with first surface mirrors from astronomical uses (which do use special coatings for durability) and these may be useful - especially such large ones. Should be worth a try
 

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Discussion Starter · #4 ·
Thanks guys. I'll prolly grab one or two. I hate to see stuff like this go to waste.

Hey Mike, I see you're from Lansdowne. I'm here in Collegeville. I was planning to hit the Woodcraft in Downingtown today, but the expected snow put the kibosh on that idea.
 

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Most (not all) first-surface mirrors are 1/4" thick. The back has no coating, so the back can be used if damaging the reflective coating is a concern. The only downside, is what they reflect will appear as if you are viewing it thru a 1/2" pane of glass. The light passes thru the glass, reflects, and passes thru the glass again. Some (probably cheaper) rear-projection TVs have second-surface mirrors.
Mirrors on their way to the trash = potential $$. Try selling some on Craigslist.
Once in a while, you'll find a mirror that is a film stretched over a metal frame. the frame is reinforced with a rigid foam panel. If you can get 2, cut a hole thru the foam, place in front of your stereo's speakers, wail till night, point lasers at them, pop in your fave rock or hip-hop CD, turn off the lights, and Up the volume! Homemade laser show!
 
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