Once my CNC is complete I'd like to be able to add an extruder to it. I would especially like to try to make an extruder or printhead that has similar resolution to the commercially available rapid prototypers. Maybe it's as simple as using a smaller diameter nozzle, slower feed rate, and smaller steps. I'll have to play with it one of these days.
Instructables is my crack.
You can't have Success without the suck.
Too many irons, not enough fire.