Hi, I've noticed in a number of WIP posts that a lot of modelers use cutting wheels, etc for cutting out small intricate parts from either plastic stock or metal. A suggestion would be to get a jewelers saw. It's like a coping saw but with very very fine teeth on a very thin blade. The saws cost about $15, and you buy blades in packs of a dozen for about $6-8. The blades will cut through even hardened steel so plastic, brass, aluminum, etc is a breeze. Plus with the blades being so thin you can cut really tight curves and intricate shapes easily without having to nibble away big chunks of material with a demel wheel. Plus you don't get melted plastic that sometimes happen with power tools and the cut is so fine there's very little if no saw marks in your material.