You can buy low power VFDs at what may be acceptable prices - probably 2nd
hand on "trademe".
Nothing there at a good price at present.

$150 if nobody else bids -  2.2. kW motor and drive
http://www.trademe.co.nz/business-farming-industry/industrial/engines-motor=
s/electric/auction-519761125.htm


FYI
http://www.trademe.co.nz/building-renovation/tools/power-tools/saws/auction=
-519177000.htm


R
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