I do relatively simple work on pool cue tips and ferrules. Right now I have a steady rest that is not actually very steady. It is three rollers in which the bearings have significant play. Consequently, I am not able to work as precisely as I would like. I want to mount a 3 jaw chunk on bearings but it must allow the cue shaft to pass through from behind. The cue will collet is about 16 mm diameter. I would prefer just purchasing this assembly but will build it if I must. Any ideas would be helpful. Hopefully you can picture what I am trying to describe, If not, I will provide pictures.