Stiffener Joints

It is pretty fundmental for us to know the materials in question.
Del

"and we were using silicon to join the stiffener"

I think you mean silicone.

Epoxy, glass fiber reinforced epoxy, urethane, acrylic, solder can all be used.

Really, all four of your questions have no specificity.

Good luck.

You could try stud welding and screw it in place. (depends on materials of course)

Check out coating materials from these guys: http://www.seriousmaterials.com/

Vince

Which do you want to make, cheap products or quality products?

I would have thought silicone ahdesive would be the easy and cheapest method.

what he needs is a resilient filler. Silicone fills the gap and cures to a soft rubbery mass.

A hot melt glue is cheap and will fill the gap and deaden the sound transmitted and cools to about the same physical form....very quickly, and it can be parted with a hot air gun if needed. Another method is contact cement and another is foamed stud adhesive, both of chich will fill the gap but are more permanent. A few tests should see what works for you.

I recently 'rebuilt' multiple stainless steel restaurant style tables to handle higher loads.

The original manufacturer had used a thin foam type two-sided tape that was working very well for this purpose. It was a pain to remove!

There is a website, www.thistothat.com, which should offer some advice about which adhesive works best.