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.

Finishing Cuts

The purpose of a finishing cut is to remove the scratches produced during the initial cut. Use a fine (60 - 80 grit) 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 grit of abrasive (80 - 100 grit). Care should be taken in selecting the grit size of the abrasive. A very fine grit will close the pores of the wood. If the pores of the wood are closed it will not accept stain.

If glazing or burning should occur immediately into a finishing cut, reduce the sanding pressure and/or select a coarser abrasive. If it should occur during a finishing cut, the abrasive has dulled and must be replaced.

Abrasive Belts

Note: All part numbers listed are for a carton of 10 belts

 

 

 

Aluminum

Silicon

Ceramic

Grit

Use

Oxide

Carbide

Alum. Oxide

 

 

 

 

 

 

 

 

 

For removing gross imperfections and restore evenness

 

 

 

 

16

 

to old flooring. To remove build-up of paints and varnishes.

-

945856

-

 

36

 

For initial cut on new flooring (maple, oak). For removing

 

 

 

 

 

 

minor imperfections and finishes from old flooring.

-

945854

945916

40

 

For initial cut on new flooring (oak, walnut). For removing

 

 

 

 

 

 

minor imperfections and finishes from old flooring.

-

945853

945917

50

 

For initial cut on new flooring (cedar, pine, fir)

 

 

 

 

 

 

For clean-up from initial cut of 16 grit.

-

945852

945918

60

 

For clean-up from initial cut of 36 - 40 grit.

945851

-

945919

80

 

For finishing cut on certain hardwoods. For clean-up

945850

-

945920

 

 

of initial cuts of 50 grit.

 

 

 

 

100

For finishing cut on certain hardwoods where a smooth

945849

-

945921

 

 

surface is desired.

 

 

 

 

120

For finishing cut on certain conifers.

945848

-

945922

150

For finishing cut on certain conifers where a smooth

945847

-

945923

 

 

surface is desired.

 

 

 

 

180

For surface roughing between coats of finish.

945846

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 14

AMERICAN SANDERS TECHNOLOGY Classic 12 Belt Sander Operator's Manual