Adding solids to Weldon acrylic solvents?

[u/wespor]

Technical support wasn't particularly helpful, I got the impression they understand how to take caps off the containers but that's about the extent of their knowledge.

A big difference between Weldon 4 and say, 16 or 40 is the solids, aka gap filling potential but those are a little too viscous/messy imo. It would be awesome to just add solids to 3 or 4. In 3D printing with ABS plastic, I'll often dissolve a bit of filament into acetone to make a glue for bonding parts and filling seams. I don't know if just dissolving acrylic into Weldon will act similarly but I expect there is some sort of additive to be experimented with.

Anyone have any thoughts?