I'm looking for a way to make Tamiya putty a bit more liquid, I think improving the viscosity is the correct term? I'm trying to make it a bit more like Mr Surfacer (which isn't available here) so that I can apply it with a brush and thus have a bit more control over its application.
Any suggestions? What would be a suitable base for it? It's going onto a plastic injection mold kit, so I guesse Acetone wouldn't be suitable? It would melt the kit wouldn't it?
TIA
Rudi

















