One of the things that has always bugged me about working with plastics is that, other than a sprue snipper, there are no tools specifically for working with styrene.
One of the things I'd like to see one my workbench is a very slow speed Dremel-like tool with a collet that will take rotary tool bits.
Dremels and the ilk spin too fast to effectively work with styrene, ABS, and other soft plastics. Touch a plastic figure or plastic terrain model with a high-speed bit and it's uncontrollable or simply melts with the friction.
Ideally, something like an adjustable speed screwdriver with a rotary tool collet is what I envision as being the solution.
Perhaps someone has already made such a thing and I don't know it.
BTW, I posted this here because there is no board specifically for plastic modeling.
