Bonding glass to metal?
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  1. #1
    Join Date
    Oct 2016
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    Bonding glass to metal?

    Have a problem that stumping me. I'm making lamp covers for my patio light set. I cut 18 gauge sheet metal to size, then plasma cut a pattern into the metal and rolled the pieces into cans (see attached pics). I want to put colored glass in the center of the pattern. I was thinking I'd use these glass beads and fasten them to the inside of the can somehow. Once they are done, I'll fasten them over the lamps on a string of heavy duty patio lights - I think they'll throw a nice pattern of color, light and shadow on the patio.

    Has anyone bonded glass to metal before - I was thinking of using ClearWeld, anybody know of a better way to do it?Name:  IMG_20181013_175249963.jpg
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  2. #2
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    Jun 2017
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    Re: Bonding glass to metal?

    My brother-in-law made a lamp in H.S metal shop and used colored plexiglass or lexan sheeting cut to fit, I think both can be heat formed, and a few dabs of silicone.
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  3. #3
    Join Date
    Mar 2015
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    Milwaukee, WI
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    Re: Bonding glass to metal?

    Look up "came glasswork".

  4. #4
    Join Date
    Oct 2014
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    262

    Re: Bonding glass to metal?

    2 part epoxy is what you want to use.

    Use toothpick to apply around the holes and set stones in place and they will stay put for a while.

    Goop and E6000 are options they would work good right out of the tube also. Good adhesion qualities.

  5. #5
    Join Date
    Oct 2016
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    127

    Re: Bonding glass to metal?

    Another alternative if the adhesive does not need to be clear

    Dow U- 428 primerless windshield adhesive

    Just don't get it on your hands... black in color and will take at least 2 weeks to wear off.


    for your ap would need to apply with a toothpick


    Although not spec-ed for it

    made gas proof fuel tank gasket for my Promac 70 chainsaw - no leaks in 2 years

    glued a shattered Jeep grand cherokee front bumper back together from the back side

    molded a fiberglass air dam to an AMX holding strong also reinforced the back of the cracked dash on same car using this urethane adhesive.

    Sticks to most anything, holds strong, stands up to vibration. and for the amount in a tube is a bargain. It does require a Heavy duty caulk gun to dispense it.

    oh yeah another use is installing windshields.
    Last edited by 455dan; 10-13-2018 at 10:49 PM.
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  6. #6
    Join Date
    Jul 2008
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    Re: Bonding glass to metal?

    Quote Originally Posted by danielplace View Post
    2 part epoxy is what you want to use.
    That's what I would use. If they're going to be out in the sun a lot, you probably want epoxy with a UV blocker, or it will yellow and eventually disintegrate. I think System Three has an epoxy with UV blocker, as well as some other manufacturers. You might also be able to use polyester resin (no UV blocker needed, although you'll want to add wax to the resin so the skin exposed to air isn't sticky).

  7. #7
    Join Date
    Jan 2010
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    Northwest Missouri
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    Re: Bonding glass to metal?

    The OP didn’t mention whether these lamp shades would be heated and cooled during normal use of the lamps. The reason I ask, is that glass and metals have rather distinctive and diverse thermal coefficients. Glass artists refer to this as COE (coefficient of expansion) or as I prefer to think “Cause Of Explosion”.

    The best option is. An elastic adhesive such as Dans windshield bond or a silicone adhesive. That should allow the materials to expand and contract without de-bonding.
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  8. #8
    Join Date
    Oct 2016
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    Re: Bonding glass to metal?

    Great feedback - thanks so much! I'll do some research on the options. The lamps will be LED so minimal heating from the light source.

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  9. #9
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    Nov 2004
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    Southern Montana
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    Re: Bonding glass to metal?

    Have you considered using SS wire, criss-crossed behind the beads?

  10. #10
    Join Date
    Nov 2014
    Location
    Pueblo, CO
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    27

    Re: Bonding glass to metal?

    Look for an adhesive called Iron Grip. Your local home improvement stores should carry it.

    It is a silicone product that we use to attach wood and metal to solid surface countertops. It cures fast and stays flexible. It is way stronger than standard silicone.

  11. #11
    Join Date
    Oct 2016
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    88

    Re: Bonding glass to metal?

    My wife suggested using wire too. I'm going to pick a couple of these methods and do a little experimenting! Thanks so much.

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  12. #12
    Join Date
    Oct 2014
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    262

    Re: Bonding glass to metal?

    Quote Originally Posted by Steve007 View Post
    Look for an adhesive called Iron Grip. Your local home improvement stores should carry it.

    It is a silicone product that we use to attach wood and metal to solid surface countertops. It cures fast and stays flexible. It is way stronger than standard silicone.
    Familiar with that product too and Steve is correct that is another great choice. Similar to silicone but adhesion is 6 times standard silicone and it absolutely stays put and doesn't run or even move from the way you place it. Weird though as cleanup is no worse than regular silicone maybe easier somehow. In any case it would hold them great and not show too much either. Home Depot has it.

  13. #13
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    May 2010
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    Sparks, NV
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    Re: Bonding glass to metal?

    This will flex with expansion and chilling and stay together
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  14. #14
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    Oct 2011
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    Re: Bonding glass to metal?

    3M 5200. Don't get it on anything you don't want it on permanently, hands included.
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