Use the PCD jig to drill four holes to match the holes in the magnet disks.
Each magnet rotor also needs an inner disk mould (diagram 23), with the same
pattern of four holes.
23 MAGNET ROTOR INNER DISK
7 deg
140
15
All moulds are sanded down to a very smooth surface, and finished with polyurethane
varnish and wax polish. Do not use ordinary paint on the moulds. The heat of the
resin process will cause the paint to wrinkle and spoil the appearance of the casting.
Rotor mould being made and used
PMG manual
page 22
June 2001