I suppose how much you use a dremel can vary a lot. If you assemble ARFs, I would imagine you would use it very little. Even when building kits, the type of kit will make a big difference. When constructing a Sig Four Star, I used it much much less than I am on my Top Flite Spitfire. I use it for shaping and hollowing out balsa blocks, cutting small rabbits for close fitting hatches and wheel covers, shaping details of all types, cutting and grinding holes. I used it when creating scale looking stacks and hollowing out a heavy pilot figure. I used it for fabricating mounting brackets for my gear doors, cutting cap screws to length. The list goes on and on.

Scott