Hi again,
140 views but no answers ! Does this mean that what I've asked is impossible ?
To repeat, I'm trying to find something that will change a common solvent such as white spirit from a runny liquid to a thicker consistency.
I've tried all manner of additives from the kitchen cupboard and garden shed. I've tried the dry flakes and powder used to make up wallpaper paste, and liquid-absorbant stuff like tapioca. Plenty of things make water thicker, but I can find nothing that thickens a solvent.
I'm guessing it needs something "chemical" that dissolves in and thickens solvent, but that's way outside my current sphere of knowledge.
Can anyone help me, please ? If only to tell me it's impossible !
Thanks.