I'd like to make a 12 inch wet saw as well, was thinking a vice built in to guide the stone in a nice straight path so you can keep your hands as far away as possible...probably will be my next project as far as tools go...I really enjoy making hones other than the mud slinging it does lol....not to mention a 12 incher and vice to guide the stone should keep it pretty straight on cuts and keep lapping at a minimum