Thread: Right glue for making a montage?

What thickness timber and ply?

In general, gluing anything to only one side of ply or MDF will end in tears unless it's quite thin; the timber will expand and contract but the board won't and the whole thing will bend. The best thing would be to glue the same stuff to both sides to keep it balanced

Originally Posted by chrisinoz

Should I use Liquid Nails or Aquadhere or another option?

Thanks
Chris

Use aquadhere, preferably exterior, and apply equal layers on either side of the ply. Why not glue the panels edge on and forget the ply?

Jim

Thanks for the response Elnajacobs

10mm pine
18mm plywood though I do have some ply about 8mm here.

So you would suggest 10mm pine, then thin ply, then 10mm pine? Can I get away with the 18mm if I sandwich it but by then of course we would have quite a thick sandwich!

Cheers
Chris

Thanks Powderpost.

"and apply equal layers on either side of the ply" so you suggest sandwiching it like elanjacobs?

"Why not glue the panels edge on and forget the ply" I have tried glueing three panels together for a tray but that size is a bit daunting to me hence the 'stick it onto a base' scenario. Would I do two panels then add a third panel and then a fourth etc?

Cheers
Chris

Sorry, I meant the timber needs to be thin, the ply doesn't matter as much.

I'd be dressing the pine down to about 6mm if possible, then you can go both sides of 18mm ply and not end up too thick. Thinner timber will also be held against movement better than thick timber.

A glue that dries rigid like epoxy is probably the way to go as it will hold the pine against movement better than PVA or liquid nails (liquid nails is actually designed to allow movement and you don't want that). Spread it with a notched trowel (I just use a scrap of MDF with 2-3mm notches cut out) and bed the timber the same way as you would with tiles.

What's to say that the plywood doesn't matter at all? Use a panel, +/- stretching, of canvas.
If some icky ply backing is convention, step aside from it and use something else.

Hi

Thanks for your contribution.

I don't understand the "Use a panel, ± stretching, of canvas."

Cheers
Chris