Does anyone use this on filling gaps in figures?Ive tried it and Im not to happy with it,will the acetone hurt the plastic when smoothing it out?

Used to use it all the time for gaps, I mixed it with Tamiya extra thin cement, than I brushed it into the gaps, works great. But now I use Mr Hobby dissolved putty, works the same way and I can still thin it with the Tamiya cement...

Acetone could very well melt the plastic. An alternative you could try is 91%+ isopropyl alcohol to the thin the putty. It works well in thinning automotive spot putty- the red stuff. It should work with the Squadron Green putty. Do a test to find out...

If you don't want to use acetone or liquid cement you could try Tamiya lacquer thinner .

For a good example of how green stuff can be used look further down this page to Rossgarys' excellent Gebergsjager build. He mixes his green stuff with something but I forgot what.
J

I use Squadron White Putty (I think it's just the same as the Green, except for the color) mixed with Tamiya glue. You can control how thick or thin you want, to fill in really small crevises. I find that the plastic glue provides a better bond with the surrounding plastic parts, and when the putty dries, it's more durable.