Hi
I buy zap-a-gap 15ml superglue for large areas, but mostly use $2 store superglue - 8 x 3ml tubes. If they dry up then - meh - open another.
I also use the superglue rather than PVA for applying sand/grit to my bases - smear superglue over the surface then pour sand over. You can also build up higher points on the base with this method as you put additional layers of superglue on.
When I started out, I would smear a little PVA on one side (not fully covered) and superglue on the other. The PVA was able to be placed visibly on a single spot and would accelerate the drying time, making it bond quickly enough to hold itself in a short period of time. These days, I'm just more patient, and make sure I pin things properly (with enough surface area, they bond pretty quickly).
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