Thread: EPIGLUE: Gap filling properties question

Groggy,

Epoxies need a minimum glue line thickness of about 1/2mm to get their strength. Too thin a glue line doesn't cut it. May not be your ideal glue if strength is the issue and you've cut joinery accurately.

To get the strength, just key/rough up the surface with a saw or chisel. Internal glue line in places is more than 1/2mm.

Cheers,

eddie

This should help

Epiglue Data Sheet

Thanks for the replies everyone, it has been quite informative. The 0.5mm should work well.

well I was partly joking -- I believe that 10 pin bowling lanes are nail laminated rather than glued, and I know of at least one road bridge that was nail laminated

Thought you may have been, but all ideas are worth consideration. What I am thinking now is that just before the glue-up I will put an 80 grit belt on my sander and rough up the mating surfaces to within 15mm of the edges. From what I have read that should work pretty well.

I've learned a bit in this thread, thanks everyone!

Originally Posted by Groggy

Thanks for the replies everyone, it has been quite informative. The 0.5mm should work well.

Thought you may have been, but all ideas are worth consideration. What I am thinking now is that just before the glue-up I will put an 80 grit belt on my sander and rough up the mating surfaces to within 15mm of the edges. From what I have read that should work pretty well.

I've learned a bit in this thread, thanks everyone!

Hi Groggy,

I noticed in the datasheet linked above that the optimum gluline for this glue was 0.134 (?) mm - I read it yesterday and am quoting from memory. It's on the datasheet as Optimum DFT (Dried Film Thickness) - I'd be aiming at about .2mm (a cigarette paper thick) then letting it set/shrink.

When I went through uni, the ballpark epoxy number we were taught was about 1/2mm

CHeers,

eddie