The stator consists of 9 coils equally spaced around a circle, wired in 3 phase star configuration. Once you finish winding and connecting our coils you'll need to cast them in resin to form the stator. The stator is a disk 15.5" diameter with a hole in the middle 5.75" in diameter. To make this we need to build a mold out of plywood. This chapter will show exactly how we built ours. Of course many things could be changed and it would still work fine (or maybe even better). We call for all 1/2" thick birch plywood (birch plywood is stronger and smoother) for all the parts. You could use thicker stuff for the lid and the base, but the middle must be 1/2" thick - the stator has to be 1/2" thick when we're finished.
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