Manual

Clarke
®
American Sanders - American 12 Floor Sander Operator's Manual Page 13
Sanding Cuts and Sandpaper
Initial Cut
Thepurposeoftheinitialcutistoremoveoldnishandgrossimperfectionsontheoorsurface.Thesand-
ing equipment should be adjusted to heavy sanding pressure setting and a coarse abrasive should be used.
Ifthesurfaceisseverelydamagedbydeepscratches,pre-existingdwellmarks,unevenplanks,etc.,itmay
be necessary to sand across or diagonally to the grain to restore evenness to the surface. If these conditions
are not present, the initial cut should be done in the direction of the grain.
If glazing, loading, or burning takes place immediately into an initial cut, select a coarser abrasive. If this
should occur during an initial cut, the abrasive has dulled and must be replaced.
Final Cuts
Thepurposeofanishingcutistoremovethescratchesproducedduringtheinitialcut.Useane(60-80
grit) grain abrasive and a reduced sanding pressure setting.
Ifthesurfaceremainsroughafteranishingcut,itmaybenecessarytouseanevennergrainofabrasive
(80-100grit).Careshouldbetakeninselectingthegritsizeoftheabrasive.Averynegrainwillclose
theporesonawoodoormakingadmissionofastaindifcult.
Ifglazingorburningshouldoccurimmediatelyintoanishingcut,reducethesandingpressure.Ifitshould
occurduringanishingcut,theabrasivehasdulledandmustbereplaced.