I almost did that on my new mini a few days after I got it up and running. You can run kurt 675 vices on the table with no clearance problems until you have to clamp something that requires the jaws to be very close together. The grease zerk and the rest of the movable jaw extend out beyond the base of the vise. With only one inch of clearance between the table and the column when you are all the way minus in the Y axis, you could do some damage. Luckily I was only jogging the table all the way to Y minus to get somthing out of the chip pan when my little brain told me to check to see if something would go crunch. I stopped about 1/8" short.