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Tip
#17
Disc Sanding
(continued)
Click
here for a printer friendly version of Tip-
Pg. 1-4, Pg
5-8, Pg 9-11, Pg
12-14
Sandpaper
Discs
The sandpaper
discs are available in three garnet grits: coarse, medium,
and fine. All three grits are “open coat”-only 40
to 60 percent of the disc surface is cov-ered with abrasive
material. This helps minimize “loading” at high
speeds and extends the life of the disc.
The grit
you choose depends on the work you have to do:
- Coarse
grit will remove large amounts of stock quickly. It
can be used to bring workpieces to their approximate dimensions;
however, it leaves a rough surface. If you want a smooth
finish, you must follow up a coarse grit with a medium or
fine grit before hand sanding.
- Medium
grit will remove small amounts of stock and can be used
to bring workpieces to their final dimensions. It leaves
a fairly smooth surface. From a medium grit, you can go
straight to hand sanding.
- Fine
grit leaves a smooth surface. It greatly reduces the
time you need to spend hand sanding, though some hand sanding
will still be required to remove swirl marks and obtain
a perfectly smooth finish.Fine grit can also be used to
grind and sharpen tools. Caution: When using the sanding
disc on the Model 500 that's not equipped with the special
disc sander dust chute, place a wide scrap board on the
way tubes directly under the disc. Sandpaper continually
loses grit, and the board will keep this grit off the way
tubes where it could scratch them. If you don't use a board
to protect the tubes, be sure to clean the tubes thoroughly
after you finish your sanding operations.
Continue
to Disc Sander Safety
Back to Disc Sander Mode - Setup &
Features
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