what glues require application to both surfaces?

Is there a rule of thumb for this? Some glues are absorbed into the surface of the materials to be bonded and some glues require a set-up time. Thank you, I have been looking for this type of lesson on adhesives for some time.

audreyobscura7 months ago

I think it comes down to the surface, really. If the surface is porous, apply glue to the porous surface before bonding. That has always been my tactic, or should I say, tack-tic?HA! :) Thank you for indulging my glue pun.