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> Fusor Metal Adhesive, Bonding longs and long clamshells
69_Lex
post Oct 31 2009, 07:49 AM
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Has anyone had any good or bad experiences using Fusor Metal Adhesives? I'm considering using it to bond my outer longs on and the long clamshells on. Then using structural rivets to prevent the unzippering effect of the bonded surfaces.

Pros I've read
1. Metal adhesives shear strength is greater than spot welds or the sheet metal being bonded.
2. Provides corrossion protection on surfaces being bonded (bonded surface)
3. No warping of metals, unlike welding.

Cons I've read
1. Bonded surfaces can unzip, which is why a spot weld or rivets ar needed along bonded seam.
2. Don't let it get into areas that you don't want bonded or filled.

Any thoughts are appreciated.
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Joe Owensby
post Oct 31 2009, 09:35 PM
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Everything has its place. Adhesive joints are great, if they are used in applications that were designed to be adhesive joints. I have a 50' wingspan glider that I built that has quite a few of the structural joints in aluminum held together with epoxy. However, these joints were designed to be glued. As mentioned before, the key is also to have perfectly clean bare metal for the glue to adhere to. Anything less than perfectly clean, is perfectly worthless as far as strength goes.

I would use the adhesive you referenced to install outer panels that were not structural, with no worries. I would be careful using it to refab the longs, etc. If it were used correctly, it should be OK, but the key is how the parts are installed. The key to the strength of the glue is that it is extremely strong when loaded in shear (ie. pulling along the plane of the glue). The relatively large surface area of the glue provides the strength. When pulled perpendicular to the plane of the glue, it is nowhere as strong. In this case, the load is transferred to the edge of the glue, and can unzip it, as someone referenced. If the pieces you glue in are loaded incorrectly (for example at the edges) they could fail.

I removed quite a few of the factory spot welds on my car, and they were all very strong. It was very, very hard to split the overlapping panels with a chisel unless most of the spot weld was drilled out.
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69_Lex   Fusor Metal Adhesive   Oct 31 2009, 07:49 AM
Vacca Rabite   Sounds new fangled. I's sceered It may be st...   Oct 31 2009, 08:37 AM
JazonJJordan   :agree: Have to see results; test- proven- trued a...   Oct 31 2009, 08:44 AM
Bartlett 914   This looks very interesting. You can even weld and...   Oct 31 2009, 09:42 AM
JazonJJordan   Yes, I was referring to the Weld Bond Procedure ad...   Nov 1 2009, 01:18 AM
kwales   As ever, a glue joint is no better than the surfac...   Oct 31 2009, 10:28 AM
sww914   That stuff is designed to bond outer panels, not t...   Oct 31 2009, 10:49 AM
balljoint   A friend who worked for 3M was on a flight and in ...   Oct 31 2009, 11:51 AM
brer   Used correctly its great stuff. Knowing the corre...   Oct 31 2009, 01:04 PM
69_Lex   My only concern is that the metal around the rivet...   Oct 31 2009, 08:31 PM
Joe Owensby   Everything has its place. Adhesive joints are gr...   Oct 31 2009, 09:35 PM
sean_v8_914   I bond all my 914 panels with Miller instant glue ...   Oct 31 2009, 10:24 PM
69_Lex   Does anyone have any input on the riveting. Is or ...   Oct 31 2009, 10:29 PM
69_Lex   Here are two rivets I've found that has good s...   Nov 1 2009, 03:46 AM
9146986   Those clamshell stiffeners should be WELDED on...   Nov 1 2009, 09:10 AM
kwales   Pretty piss poor metal properties for those rivets...   Nov 1 2009, 12:29 PM
ghuff   This reminds me of glued together ebay turbos. ht...   Nov 1 2009, 09:03 PM
69_Lex   Does anyone have any good ideas on a mechanical fa...   Nov 1 2009, 09:12 PM
rick 918-S   Air frames are riveted because the metal expands a...   Nov 1 2009, 10:28 PM
brant   I used fusor all over on my race car project. (2 t...   Nov 1 2009, 11:09 PM
69_Lex   I used fusor all over on my race car project. (2 ...   Nov 2 2009, 10:28 AM


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