polishing stainless steel machine

[EddyCurrent]

I've worked on a grinder for steel that was controlled by PLC but don't you just need something that goes back and forward, side to side ? this could be done with relays and limit switches.
On the PLC grinder, a microphone located near the grinding wheel detected when the wheel had made contact with the metal and stopped it's downward travel. An electronic notch filter was used to reliably detect the right frequencies, surprisingly it worked well.

[Blackrat]

a microphone located near the grinding wheel detected when the wheel had made contact with the metal and stopped it's downward travel. .

thats neat eh ...

i am thinking why not just use a grinding stone on a cnc mill/router ?
i can use a spindle that can run 10000rpm , ive mailed some companies to find out max RPM of their 'cup' grinding stones ... i think ive saved myself some time :D oh and a few pennies :P

obviously you would still need flood coolent , and a decent way of mounting the plates