American Standard ALTO 70145A 11/00 - Manual (Page 14)

Page 14 AMERICAN SANDERS TECHNOLOGY Classic 8 Operator's Manual
Sanding Cuts and Sandpaper
Initial Cut
The purpose of the initial cut is to remove old finish and gross imperfections on the floor surface. The
sanding equipment should be adjusted to heavy sanding pressure setting and a coarse abrasive belt 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 finishing cut is to remove the scratches produced during the initial cut. Use a fine (60 - 80
grit) grain abrasive and a reduced sanding pressure setting.
If the surface remains rough after a finishing cut, it may be necessary to use an even finer grain of abrasive
(80 - 100 grit). Care should be taken in selecting the grit size of the abrasive. A very fine grain will close
the pores on a wood floor making admission of a stain difficult.
If glazing or burning should occur immediately into a finishing cut, reduce the sanding pressure. If it should
occur during a finishing cut, the abrasive has dulled and must be replaced.
Grain Use
16 grit For removing gross imperfections and restore evenness - 945844 -
to old flooring. To remove build-up of paints and varnishes.
36 grit For first sanding of new flooring (maple, oak). For removing - 945842 945901
minor imperfections and finishes from old flooring.
40 grit For first sanding of new flooring (oak, walnut). For removing - 945541 945902
minor imperfections and finishes from old flooring.
50 grit For first sanding of new flooring (cedar, pine, fir) - 945840 945903
For clean-up of 16 grit.
60 grit For clean-up from initial cut 36 - 40 grit. 945839 - 945904
80 grit For final sanding of certain hardwoods. For clean-up 945838 - 945905
of initial cuts (50 grit).
100 grit For final sanding of certain hardwoods where a smooth 945837 - 945909
surface is desired.
120 grit For final sanding of certain conifers. 945836 - 945910
150 grit For final sanding of certain conifers where a smooth 945835 - 945911
surface is desired.
180 grit For surface roughing between coats of finish. 945834 - -
Abrasive Belts
Note: All part numbers listed are for a carton of 10 belts
Aluminum Silicon Ceramic
Oxide Carbide Alum.Oxide