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-   -   What adhesive to use for Sorbothane? (http://www.diyaudio.com/forums/construction-tips/230299-what-adhesive-use-sorbothane.html)

tonyptony 18th February 2013 03:36 PM

What adhesive to use for Sorbothane?
 
I'm building a multi-layer platform for my TT - 2" HDF (yes, not MDF) followed by a 3/16" layer of Duro 30 Sorbothane, followed by a 3/8" sheet of granite. The HDF is smooth finished, but the granite has one smooth side and one side that would require a fill type adhesive.

I'd like to know what non water-evaporative adhesive I can use on Sorbothane. In the HDF layer I was wondering if I could use something like 3M Spray 80. In the granite layer I'm not sure what I could use. Both interfaces would require high bonding strength due to the nature of the weight involved.

SY 18th February 2013 03:51 PM

3M 467.

Cal Weldon 18th February 2013 03:56 PM

Or?

Improved Sorbothane Components Featuring 3M 200MP Adhesive Stay Put | Sorbothane

SY 18th February 2013 04:05 PM

That's actually the same adhesive.

Cal Weldon 18th February 2013 04:09 PM

Okalee dokalee,

Ned.

tonyptony 18th February 2013 04:41 PM

Hmm, I hadn't thought of tape. I thought tape would have a higher possibility of failing (peeling away under the weight of these materials). After I posted this I spoke to a support person at the place where I bought the Sorbothane. He said that for the Sorbothane to HDF interface, 3M Spray 80 shoukd work well, and that for the granite layer I should use Gorilla Glue (!) as I would probably need some gap filling there.

SY 18th February 2013 04:44 PM

467/468/200 are insanely strong adhesives- the only issue is that once you touch surfaces, there's no chance to re-position.

Kindhornman 18th February 2013 04:54 PM

Tony,
The Gorilla glue is a single component urethane adhesive. It dries by a reaction with the moisture in air. There are many urethane adhesives that would do the job on a porous surface such a granite. A two component urethane is 3M 3532 You would also be able to use many epoxy adhesives. 3M 2216 is a high strength epoxy. A spray adhesive could work but would have no gap filling properties and have less surface bonding strength but you probably wouldn't have a problem with either approach as you will have a fairly large surface contact area either way.

Cal Weldon 20th February 2013 02:01 PM

Why not use ones that Sorbothane manufacturers recommend?

Kindhornman 20th February 2013 02:14 PM

CAl,
That would be entirely to easy, to follow the manufacturers recommendations! Where is the creativity in that, how will he know how to screw it all up!


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