We are talking about four entirely different organic solvent families here: 1) Ketones (acetone, MEK); 2) aromatics ( toluene & xylene, which are based on the benzene molecule; 2) alcohols, which are relative simple, straight chain molecules (think railcars hooked end-to-end, also known as aliphatics because of this characteristic); and, 4) light fraction petroleum distillates. In one sense, these are all closely related, but each group has its own specific chemical and physical characeristics, and thus will act as a a solvent only for very closely related compounds. As Goop is based on aromatics, toluene and xylene definitely work. Alcohol is out in the cold, as are the ketones.
Low molecular weight alcohols such as isopropyl, DNA(which is ethyl that has had noxious chemicals added to it to discourage one from drinking it and to avoid the very high federal alcohol taxes on it), Everclear (who would want to waste it?), methyl (wood alcohol) and ethyl (grain alcohol) all work as a thinner for both the soft (Flex Coat) and hard (Devcon) epoxies: and NO; the water in 70% isopropyl DOES NOT cause these epoxies to turn milky!
The ketones are solvents in many of our cements such as Sally Hansen's Hard as nails, vinyl cement, etc.
Much like the Hatfield's and McCoy's, as long as you stay on the right side of the road, everything should be OK; but cross the road and you have a very different ballgame. Just don't mix families, as it typically won't work.
Cheers!
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