I'm new to 3d printing. I'm spending time at an makerspace in Oakland and have access to their Lulzbot Taz for printing parts. They have a bucket full of stepper motors and shafts, I have plenty of arduino shields and a little experience, and RAMPS looks ideal for this. Any advice? I'm hoping to build a delta printer, though I haven't figured out what kind of build area I could get with the stepper motors available. I want to be able to print in PLA and ABS, and I'll need a heated bed.