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Direction of Feed for Internal Cuts (Fig. 27b)
When making an internal cut, such as groove,
dado, or slot, always position the guide (edge
guide, straight edge, or board guide) on the
right-hand side of the tool as the cut is made.
Always be alert and exercise extreme caution
in order to maintain control of the tool when
making this type of cut around curves.
In either case, the lateral thrust of the cutting is
always against the guide, as is proper.
WARNING
on the tool base with both hands at all times.
Failure to do so could result in loss of control,
causing possibly serious personal injury.
Rate of Feed
The proper rate of feed depends on several
factors: the hardness and moisture content of
the workpiece, the cutting depth, and the cutting
diameter of the bit. Use a faster rate of feed
when cutting shallow grooves in soft woods,
such as pine. Use a slower rate of feed when
making deep cuts in hardwoods, such as oak.
Feeding too quickly (Fig. 27c)
Forcing the feed of the cutter bit forward
too quickly slows the rotational speed of the
cutter bit and the bit takes larger bites as it
rotates, causing splintering and gouging of the
workpiece. This forcing action can also cause
the router motor to overheat.
The high speed of the cutter bit during a proper
feeding operation (left to right) results in very
little kickback under normal conditions.
Always clamp the workpiece
securely and keep a firm grip
Fig. 27c
Feeding too quickly
Fig. 27d
Feeding too slowly
Kickback may damage the workpiece and
could result in losing control of the tool, causing
possible personal injury.
Feeding too slowly (Fig. 27d)
When the cutter bit is fed too slowly, the rotating
cutter bit does not cut into new wood rapidly
enough to take a bite. Instead, it scrapes away
sawdust-like particles. This scraping produces
heat, which can glaze, burn, and mar the cut
in the workpiece, and in extreme cases, can
overheat the cutter bit.
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