Sanding Cuts And Sandpaper - Clarke OBS-18 Operator's Manual

Sanding Cuts and Sandpaper

Initial Cut
The purpose of the initial cut is to remove old fi nish and gross imperfections on the fl oor surface. Use a course (20-36 grit) grain
abrasive.
Final Cuts
The purpose of a fi nishing cut is to remove the scratches produced during the initial cut. Use a fi ne (60-80 grit) grain abrasive.
If the surface remains rough after a fi nishing cut, it may be necessary to use an even fi ner grain of abrasive (80-100grit). Care should
be taken in selecting the grit size of the abrasive. A very fi ne grain will close the pores on a wood fl oor making admission of a stain
diffi cult.
If glazing or burning should occur the abrasive has dulled and must be replaced.
Grain Use
20 grit For removing gross imperfections and restoring
evenness to old fl ooring. To remove build-up of
paints and varnishes.
36 grit For fi rst sanding of new fl ooring (maple, oak).
For removing minor imperfections and fi nishes
from old fl ooring.
60 grit For cleanup from initial cut 36 grit.
60 grit
screen mesh
80 grit For fi nal sanding of certain hardwoods. For
80 grit cleanup of initial cuts (60 grit).
screen mesh
100 grit For fi nal sanding of certain hardwoods and
100 grit conifers where a smooth surface is desired.
screen mesh
120 grit For fi nal sanding of certain hardwoods and
screen mesh conifers where a smooth surface is desired.
For leveling after initial fi nish coat.
150 grit For scratching surface between coats of fi nish.
screen mesh
180 grit For surface roughing between coats of fi nish.
screen mesh
®
American Sanders Operator's Manual (EN) - OBS-18/18DC HDTR
Clarke
ENGLISH
EN
Standard Professional
Grade Grade
Part # / Qty Part # / Qty
945950 / 10
945951 / 20
945954 / 20
945960 / 20
945955 / 20
945961 / 20
945956 / 20
945962 / 20
945963 / 20
945964 / 20
FORM NO. 70403B - 9 -