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Thread: Cracked horn frame

  1. #1
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    Cracked horn frame

    I've got a question.
    A woman came by today with a cracked horn frame. She sat on it and found out that glasses are best worn on the head instead of on the buttocks.

    I've never handled horn frames before, and I wonder, how does one repair them? What kind of glue do yo use? Are there any special techniques? I dod a seach on the forums and couldn't find anything.

    Metal, plastic and wood can be repaired very nicely, is that also possible to repair horn so that it is hard to see that it's repaired?

    Do you guys have any hints or tips?

  2. #2
    Banned
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    See if you can contact Jerry Huang. Many of his horn temples are made up of many tiny pieces of horn, so he must glue them together some how. I do remember that he stressed rubbing the horn to warm it with oil before attempting adjustments.

    Chip

  3. #3
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    Thank's, I've send him a PM. ^_^

  4. #4
    Manuf. Lens Surface Treatments
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    Blue Jumper want to produce some custom spectacles frame horn...................................

    Quote Originally Posted by Mactire View Post

    A woman came by today with a cracked horn frame. She sat on it and found out that glasses are best worn on the head instead of on the buttocks.



    Eyewear Accessories

    We supply high quality BUFFALO HORN PLATES for EYEWEAR MANUFACTURERS in OVER THE WORLD !

    If you are OPTICAN and want to produce some custom spectacles frame horn, you could contact us to import the horn plates !


    http://www.handicraft-vn.com/shop/ey...ies-c-158.html
    Last edited by Chris Ryser; 09-18-2011 at 05:32 AM.

  5. #5
    Bad address email on file rickyforever's Avatar
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    never met this problem before too, and i also wonder how can repair this

  6. #6
    Manuf. Lens Surface Treatments
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    Blue Jumper fuse it back together, then sand and buff the joint..................................

    Quote Originally Posted by rickyforever View Post

    never met this problem before too, and i also wonder how can repair this


    I have never done horn.................but have done many turtle shell frames in my days...................and figure that this is probably very much the same. Clean brakage, wrap wet towels around it and press a hot iron around it to create steam and that will fuse it back together, then sand and buff the joint.

  7. #7
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    I'm back ^_^
    Been stuck in an internetless void for a while.

    Anyway, I did a quick scetch and uploaded it as an attachment.
    One break is on the left nasal side of the frame. Quite a clean break.

    The temples are made from two layers horn, a darker one and a lioghter inner one. I expected this to be broken on the contact surface, but no. The lighter layer has peeled off till about halfway down the temple, leaving a ragged splintered break.

    The frame in question is made of buffalo horn. I don't think it behaves the same as tortoise, but I'm not quite sure.

    If any of you know how to fix this I'd be much obliged.
    Click image for larger version. 

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  8. #8
    Master OptiBoarder
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    Chris' advice is quite similar to what Jerry had told me previously. When Jerry resurfaces I am sure he will give you more detail.

    Doc

  9. #9
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    Yes, Chris advise would work for the crack on the temple. It is going to be a little tough for the front rim crack but it is still repairable if you have right equipment! I would mill out a piece of horn plate down to 1 mm and further sand down to 0.8mm to laminate over the horn frame front with a layer of silk in between to reinforce the surface structure, so the frame front will not crack again when u pop in the RX lens!

  10. #10
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    Thanks, I'll give it a try.
    I'll go see of I can find an old horn frame to experiment with. This are some handy skills. I've asked around at school and most opticians send them to a special repair guy.

  11. #11
    Bad address email on file Mr. Buffalo's Avatar
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    I believe to copy a new one will cost less. the shape and size will be the same. cost usd80

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