modifying motors

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "RIAA/MPAA's Worst Nightmare" <mike.marcum-at-zoomtown-dot-com> 

After getting a quote for nearly $200 for a 1/15 hp 3600 rpm salient pole 
synch motor I decided to mod my own. What I have is a 1/20 hp (hope that 
will spin a 1/8"x 4" disk with 2 or 4 of the smallest acorn nuts i can 
find). What I wanted to know is if I grind only 2 flats would it turn into 
3600 rpm? How deep should I go with the grinding? Thanks for any help since 
I've never hacked up a motor like this before.