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B. FEED RATES
The optimum feed rate for the Model G1778 Power Feed will vary depending on a number of fac-
tors, including; the thickness of the material to be cut, the hardness of the workpiece, the speed of
the cutting tool and the configuration of the cutting tool (number of teeth, shape of cutter, etc.
Generally, the following rules can be followed with a good level of success.
• The thicker the material to be cut, the slower the feed rate.
• The harder the material, the slower the feed rate.
• The faster the cutter speed, the faster the feed rate.
• The greater the number of teeth or cutting surfaces, the faster the feed rate.
X. GEARING
The Model G1778 Power Feed gearbox allows you to tailor your feed rate to match individual pro-
jects. Feed rates range from 16 to 52 feet-per-minute. See Figure 11. To change gears:
1. Remove the gearbox cover by unscrewing the knurled knob on the front of the power head.
2. Determine the speed you desire, based on your material and cutter configuration.
3. Locate the desired feed rate on the chart shown in Figure 11.
4. Remove the hex nuts which hold the drive gears in place. See Figure 10.
5. Remove the existing gears and replace with the new gears.
6. Replace the hex nuts and attach the drive gear cover.
Figure 10
Hex Nuts