I was thinking of covering up a lead screw (on my band saw clamp actually) that gets nicely munged with chips because its oiled a bit. Amazing how expensive & rare generic tubing is. Anybody have source/ideas? I've seen some material that might work, but unfortunately it was attached to a cheapo mini vacuum. I've seen pics on lathe lead screws but it looks more like tube within a tube. Maybe dustcovers only have limited stretch/collapse range?