39 dollar glasses

Feb 22, 2008 02:23

Pretty darn cool.

http://glassyeyes.blogspot.com/2008/02/re-lensing-experiment-begins.html

My glasses have a nasty scratch in one lens, and I've been wanting to get a new pair, but unable to readily afford it. This looks like a good, cheap

engineering, optics

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Comments 5

anonymous February 24 2008, 22:45:08 UTC
You really ought to just make some. Other than having to procure the hinges and nosepads, it doesn't seem like it should be that hard for you. And apparently the lenses are cut via a pantograph run along the inside of the frames, so unless the frames require unusually big or curved lenses, anything can work.

I have some windsor style frames right now (think Harry Potter or Harry Truman) but they're not that flexible metal stuff. I'd be happy to get some better frames in the same style, but I'm sure they'd cost a fortune from anyone who regularly deals in glasses. The margins they charge are outrageous.

--josh

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tevarin February 24 2008, 23:07:54 UTC
I wish I could grind prescription lenses. Spinoza et al. were doing it four centuries ago, how hard could it be?

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anonymous February 25 2008, 03:16:25 UTC
Seriously, I thought that glass was something you worked with a lot. But even if you had to have someone else do the lenses, I bet you could make good bespoke frames cheaply. Of course, remember that Spinoza died as a result of inhaling glass dust, so use a proper mask.

--josh

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hmm.. tevarin February 25 2008, 16:25:34 UTC
Casting rough blocks from sand, soda, and lime, ok. Cutting and polishing flat glass blocks, sure. Chemical tempering, no problem. But grinding a mathematically-accurate spherical+cylindrical curve that can also correct astigmatism is beyond my experience ( ... )

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