Per the user manual: [[File:Craftsman20_drill_manual.pdf ]], The drill should be periodically cleaned of dust, the table wiped with wax to prevent rust, and (if needed) the quill lubricated with a dry lubricant like silicone or graphite. Users should perform this maintenance as the drill is used, however PS1 should inspect the drill monthly | Per the user manual: [[File:Craftsman20_drill_manual.pdf ]], The drill should be periodically cleaned of dust, the table wiped with wax to prevent rust, and (if needed) the quill lubricated with a dry lubricant like silicone or graphite. Users should perform this maintenance as the drill is used, however PS1 should inspect the drill monthly |