I am thinking about building a RepRap Prusa Mendel (3D Printer). My biggest worry is the electronics. I will use RAMPS 1.4http://ultimachine.com/ramps-pre-assembled-kit-complete to control it. It is essentially an Arduino Mega shield. It would help me decide if someone could explain how I would actually send a file to print. Hopefully someone here has tried this before.
Thanks in advance.