As PD says it can be done by hand but if you want to use a machine it needs to be able to run slow, less that 2000rpm I think mine is 1800rpm
A foam farecla g mop is the usual tool used wet with farecla g3
Something like this but avoid the max speed of 3000rpm
Look at this on eBay
http://www.ebay.co.uk/itm/172226231014
You still need to block flat the repairs and sand down to 1000 or 1200 grit wet and dry before polishing so the machine only saves a little work