I'm wondering how one would protect the lead screw under the table from getting covered in cuttings... i would think that if the screw is spinning that would sling off most of the stuff.. but some will still stick and get into the nut... do you use a wiper, or brush infront and behind the nut, or what is the commonly accepted and or proven method of taking care of this??? ive even gone so far as to consider some sort of ultra light weight accordian bellows situation that the screw rides in....