I bought a large bulk batch of Lego from Ebay and they had a whole bunch of those black 1/4 circle UFO pieces. I stacked them together and it just looked like the middle of a Dalek. I just HAD to make a Lego Dalek! 8 months, a couple of Bricklink purchases (mostly for the disks to make the Dalek bumps), and 4 complete rebuilds later, it worked! I need to make a video of it in motion.