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Tip
#6
Drum Sanding
(continued)
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Edge
Sanding
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Figure
18-4. Work this way when sanding edges. The setup
assures that sanded edges will be square to adjacent
surfaces.
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Most edge
sanding is best done with the machine in the vertical position
(Figure 18-4).
The setup assures that sanded edges will be square to adjacent
surfaces. Move the workpiece slowly, but keep it in constant
motion. The drum will continue to sand if you hold the workpiece
still and this will cause indentations that will spoil the
edge. Move the workpiece from left to right, against the drum's
direction of rotation.
Sanding
operations will be most efficient and abrasive materials will
last longer if you do initial cutting so there is the least
amount of material for the sander to remove. When you are
doing a lot of sanding, occasionally adjust the drum's vertical
position so you will be using all of the abrasive surface.
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Figure
18-5. To sand internal edges, position the stock
before extending the quill.
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Internal
edges are sanded in a similar fashion, the only difference
being that you position the work piece before extending the
quill (Figure
18-5). The drum sander's position is maintained by locking
the quill.
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Figure
18-6. Sand straight edges as shown when you wish
to sand workpieces to an exact width.
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You can
smooth straight edges freehand by passing them across the
drum; but a more efficient technique, when stock width permits,
is to work with the rip fence as shown in Figure
18-6. The drum's depth of cut must be very light, only
enough to smooth the edge. When the fence is situated between
the drum and the way tubes, the pass is made from right to
left. This setup is also used to edge sand any number of pieces
to exactly the same width.
The same
setup can be used if you work with the shaper fence. The amount
of material to be sanded off is controlled by adjusting the
infeed fence as you would when doing a shaping cut that removes
the entire edge of the stock. There is no limit to how wide
the stock can be when you are using the drum sander/shaper
fence arrangement.
Continue
to Surface Sanding
Back to Drum Sander Speeds
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