[whizzter]

Water but it's a bit of hit and miss that can turn soggy, better is bicarbonate that triggers are more or less instant reaction (often in baking powder in a pinch, but that's mostly a waste compared to just bicarb).

Often if one wants to make something "larger", dropping superglue, adding bicarb with a silt, blowing away and dropping another layer works fairly well (it's a bit of a brittle but still quite hard mass that is created quickly).

[wartywhoa23]

I've rebuilt my old laptop's hinges this way, building up little by little, almost 3d printing crudely by hand.

Then at some point I realized that I overdid it!

Easy-peasy, a file and sandpaper to the rescue, I thought.

Aand.. I spent x3 more time shaving off the excess than building it! It's super tough.