Sandpaper.replacement, Sandpaper.selection – Woodstock SHOP FOX W1740 User Manual
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Model W1740 (For Machines Mfg. Since 1/13)
O
PE
R
ATIO
NS
GRIT
CLASS
USAGE
36
Extra Coarse Rough sawn boards,
thickness sanding,
and glue removal.
60
Coarse
Thickness sanding and
glue removal.
80–100
Medium
Removing planer
marks and initial fin-
ish sanding.
120–180
Fine
Finish sanding.
The Model W1740 is designed for 3" wide x 70" long hook-
and-loop sandpaper cut at a 15º (see
Figure.13). To use
other widths of sandpaper, use the formula in
Figure.14
to find the angle to cut the sandpaper.
To.change.sandpaper,.do.these.steps:
1. DISCONNECT SANDER FROM POWER!
2. Open the top cover to expose the drum.
3. Unwind the old sandpaper and notice the direction
that it was wrapped around the drum.
4. Use the old sandpaper as a pattern to cut out the
new sandpaper, or use the three steps in
Figure.14,
to cut a different width sandpaper.
5. Wrap the sanding drum with the new sandpaper.
Make sure to wrap the sandpaper tight and try to
keep the gaps to a minimum.
6. Tape both ends with
3
⁄
4
" strapping tape (see
Figure.
15), making at least two complete passes so that the
second layer is directly on top of the first.
Sandpaper.Replacement
We recommend aluminum oxide for general workshop
environments. The chart below groups abrasives into dif-
ferent classes and shows which grits fall into each class.
Sandpaper.Selection
Figure.15. Sandpaper wrapped with
strapping tape at both ends of drum.
Figure.14. Procedure for finding the angle
of cut for wider or narrower sandpaper for
any size sanding drum.
3"
13"
13"
15º
15º
70"
3" Wide x 70" Long
Hook and Loop Sandpaper
Cut Angles
Figure.13. 3" wide x 70" long hook-and-
loop sandpaper cut at a 15º.
The general rule is to sand a workpiece with progressively
higher grit sandpaper, with no one grit increase of more
than 50. Avoid skipping grits; the larger the grit increase,
the harder it will be to remove the scratches from the
previous grit. Ultimately, the type of wood you use and
your stage of finish will determine the best grit types to
install on your sander.