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 Gluing Teflon to Aluminum 
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Joined: Thu Jul 22, 2010 10:10 pm
Posts: 86
Location: Paralowie, South Australia
Post Gluing Teflon to Aluminum
Hi all,

I am working on a dolly system and wondered if any of you have had success in gluing teflon to Aluminum? I tried CA Glue (similar to super glue) from a hobby shop but all I had was foam safe glue, it stuck but I was able to break the bond with a little force... Both surfaces were roughened to help with bonding...

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Andrew Wall,
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Thu Aug 19, 2010 2:57 am
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Joined: Fri Mar 12, 2010 12:16 pm
Posts: 370
Location: Gloucester UK
Post Re: Gluing Teflon to Aluminum
Astroman wrote:
Hi all,

I am working on a dolly system and wondered if any of you have had success in gluing teflon to Aluminum? I tried CA Glue (similar to super glue) from a hobby shop but all I had was foam safe glue, it stuck but I was able to break the bond with a little force... Both surfaces were roughened to help with bonding...


When I was gluing PTFE to Alumininum I had to use an acid etching liquid to prime the surfaces before gluing. I'll see if I can dig some info out on it, I do recall it was a 3M glue that I was using.

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Thu Aug 19, 2010 4:05 am
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Post Re: Gluing Teflon to Aluminum
Gorilla glue? I use it to fix everything else =)

Generally speaking, I would only use mechanical fasteners. I would trust adhesives in this situation, especially since the PTFE bearings are consumables, and will need replacing.

!c


Thu Aug 19, 2010 5:53 am

Joined: Sat Apr 17, 2010 4:08 pm
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Location: Los Angeles, CA
Post Re: Gluing Teflon to Aluminum
I have used UHMW Polyethylene in the past. Machines very easy and is almost as slippery as PTFE and lasts longer. I bought it at McMaster-Carr in bars. You can also find it as drawer slides with adhesive backing that is very very sticky. I have some on drawers in a cart I have thats been there 15-18 years and hasn't come loose yet. PTFE can be a pain to work with since it's very soft and won't stick to anything.

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Thu Aug 19, 2010 4:18 pm
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Joined: Thu Jul 22, 2010 10:10 pm
Posts: 86
Location: Paralowie, South Australia
Post Re: Gluing Teflon to Aluminum
Thanks for the input guys, I would use a form of mechanical adhesive ie.. bolts, screws etc.. but the teflon is only about 3mm thick so not a great deal of thickness to work with...

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Andrew Wall,
South Australia.


Thu Aug 19, 2010 8:44 pm
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Joined: Tue Apr 28, 2009 7:48 pm
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Location: Vista, California
Post Re: Gluing Teflon to Aluminum
Try superglue then sprinkle with baking soda


Wed Sep 15, 2010 4:53 pm
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Joined: Wed Apr 16, 2008 9:49 pm
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Location: Troutdale, OR http://www.vimeo.com/ac
Post Re: Gluing Teflon to Aluminum
I wouldn't trust glue for anything, all it would take is a temperature change to break the bond.

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Fri Sep 24, 2010 3:20 am
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Joined: Thu Jul 08, 2010 5:20 pm
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Post Re: Gluing Teflon to Aluminum
I have glued Teflon to Aluminum at work several times. The key is surface prep. Sand both surfaces with sand paper. Clean them both really well, I used acetone, but isopropyl alcohol or ethanol will work as well.

At work we plasma treat the Teflon surface, I doubt you have access to one of these. But as someone else mentioned there are acid etches that are to work real well.

I use 3M DP420 to glue it, it is a 2 part epoxy. You should be able to buy it from McMaster Carr for fairly cheap. http://www.mcmaster.com

Hope this helps.

Joe


Thu Sep 30, 2010 1:55 pm
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