Hi Gavin
Yes these motors must have some chuff, I use front loading washing machine motors for machine tools. You can get constant speed from 500---12000RPM. www.calenterprises.co.uk/speed.html I am planning a mill come surface grinder using 60mm pipe for the column, a heavy cast iron block for the table and other bits made from machined cast iron held together with metric screws. Will post some pics when I can be bothered. I only need to flatten stuff out and cut the occasional slot.

Best regards Keith