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Medical Forum / General / Vision / February 2007

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How to replace lenses in my glasses?

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martin lynch - 10 Feb 2007 22:46 GMT
I bought a pair of glasses less than a year ago, and the frame chipped
when I dropped them.  I was able to find the exact same frames at a
store (without an optometrist).  When I had metal frames, there was a
screw that allowed you to loosen the frame and replace the lens.  But
this particular frame is all plastic, and does not have such a thing.
How do I switch the lense from my old frame to the new one (again,
it's the EXACT same  frame)???  Do I just pop them out with force?
Warm up the frame in warm water first?
James - 11 Feb 2007 00:06 GMT
> I bought a pair of glasses less than a year ago, and the frame chipped
> when I dropped them.  I was able to find the exact same frames at a
[quoted text clipped - 4 lines]
> it's the EXACT same  frame)???  Do I just pop them out with force?
> Warm up the frame in warm water first?

You will need to heat the plastic. The water will need to hot, not warm. But
I would take it to where you bought the original frames or the new frames
and see if they will do it for you. Many places will do it for free if you
previously bought something there..
Bucky - 11 Feb 2007 08:48 GMT
> I would take it to where you bought the original frames or the new frames
> and see if they will do it for you. Many places will do it for free if you
> previously bought something there..

I agree. Have them do it, they have tools and more experience.
William Stacy - 11 Feb 2007 00:07 GMT
You might be able to do that, and might not.  We use hot salt, hotter
than you can get water.  If you're lucky, you'll snap them in without
breaking the frame, and who knows, you might even get the axes lined up
properly, and even be able to adjust them on your own face.  I heard
about a sailor who set his own broken arm, and then there's that rock
climber who cut his own hand off to get free.  Your mileage may vary.

>I bought a pair of glasses less than a year ago, and the frame chipped
>when I dropped them.  I was able to find the exact same frames at a
[quoted text clipped - 6 lines]
>
>  
BlackHawk96 - 12 Feb 2007 06:33 GMT
Thanks for that "hot salt" tip,  Bill.

Do you know what the recommended temperature of the salt is?  If I
knew that I could heat up the salt in a deep baking dish in the oven,
and go from there. My guess would be 250 degrees f. But if that
weren't hot enough, one could always increase the temp by, say, 25 d.
f., until the salt was hot enough to make the plastic frames pliable,
without melting them. Of course, how LONG you leave the frames in the
hot salt is another variable. I would imagine that only submerging the
lower 1/2 to 2/3 of the frames in the salt would be critical in order
to not screw up the alignment of the lenses. Of course I would only
submerge the lower portion of one lens at a time. I could also
sacrifice the extra pair to find out what works. After all, all I
would need would be the lenses, not the frames. And hey, if I REALLY
screw it up I can always order another pair of glasses on the net for
less than $10, with the prescription I want.

Regarding that rock climber who cut his own hand off, as I recall the
story he had to use a dull knike to do it! If that were the case he
was obviously not thinking too clearly, as he could have SHARPENED his
knike on the boulder which was pinning his hand. Maybe he had always
had his knives sharpened by professionals in the past, and didn't
realize that he could do it himself, if he wanted!

Sincerely,  BlackHawk

>You might be able to do that, and might not.  We use hot salt, hotter
>than you can get water.  If you're lucky, you'll snap them in without
[quoted text clipped - 13 lines]
>>
>>  
William Stacy - 12 Feb 2007 19:57 GMT
>Do you know what the recommended temperature of the salt is?  If I
>knew that I could heat up the salt in a deep baking dish in the oven,
>and go from there. My guess would be 250 degrees f.

Pretty good guess.

>But if that
>weren't hot enough, one could always increase the temp by, say, 25 d.
[quoted text clipped - 3 lines]
>lower 1/2 to 2/3 of the frames in the salt would be critical in order
>to not screw up the alignment of the lenses.

You can try that.  I usually submerge one side at a time for about 5
seconds, depending on the frame, and keep it moving to help avoid
surface pitting/burns.  Check flexibility and if still stiff, 5 more
sec. at a time. Work from the front, inserting first the temporal edges,
then roll the bottom edge into the groove, then the top, finish by
snapping in the nasal corner.
BlackHawk96 - 22 Feb 2007 08:25 GMT
>>Do you know what the recommended temperature of the salt is?  If I
>>knew that I could heat up the salt in a deep baking dish in the oven,
[quoted text clipped - 16 lines]
>then roll the bottom edge into the groove, then the top, finish by
>snapping in the nasal corner.

Thank you very much for that information, Dr, Stacy. It is most
enlightening.

Sincerely,  BlackHawk
michael toulch - 21 Feb 2007 13:34 GMT
> I bought a pair of glasses less than a year ago, and the frame chipped
> when I dropped them.  I was able to find the exact same frames at a
[quoted text clipped - 4 lines]
> it's the EXACT same  frame)???  Do I just pop them out with force?
> Warm up the frame in warm water first?

go to any optical shop and ask them to do it. why risk burning the
frame.
BlackHawk96 - 23 Feb 2007 05:13 GMT
>> I bought a pair of glasses less than a year ago, and the frame chipped
>> when I dropped them.  I was able to find the exact same frames at a
[quoted text clipped - 7 lines]
>go to any optical shop and ask them to do it. why risk burning the
>frame.

1) So I can learn a new skill, which may be valuable in totally
unpredictable future adventures.

2) To experience the thrill of being able to do things for myself and
be the master of my own fate, in a small, but significant, way.

Sincerely, BlackHawk.

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