VIII. OPERATIONS (Continued)

C. GRINDING

The 41/2" aluminum oxide wheel offers a 100-grit surface for general grinding operations. The 41/2" wheel turns at 3450 RPM, making it possible to remove relatively large amounts of material.

The smaller wheel is capable of generating enough heat to ruin the temper of metal and make it brittle. Care should be taken to grind in short, light strokes. Prolonged contact between the wheel and your workpiece should be avoided. Dip the workpiece in water frequently to keep it cool as you grind it.

The 41/2" wheel is best used to shape the cutting edges of your tools. Use the 41/2" wheel to remove nicks and square edges before fine honing on the larger stone.

Figure 4. Proper grinding positioning.

D. SHARPENING

The 10" 220-grit aluminum oxide wheel is used for creating a finished edge on your tool’s cutting surface. The wheel turns at 70 RPM, allowing you to hone fine edges on your tools without over- heating. The wheel sits in a water bath, which cools, cleans and lubricates as the wheel turns.

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Fill the tank reservoir up to approximately 80% full when wet grinding. Do not leave the 10" wheel immersed in water for long periods of time if the grinder is not in use. See Water Reservoir section under the Maintenance heading.

The large stone features a fully adjustable tool table which allows you to customize your grinding angle to fit your specific needs. Loosen the lock handles and position the table to match the bevel of the tool you are sharpening. Figure 5.

An adjustable angle gauge on the tool table allows you to match the cutting of compound bevels, such as those on skew chisels, with the 10" stone. Loosen the knob and turn the angle gauge to match your compound bevel. Once the gauge matches the desired angle, tighten the knob.

Figure 5. Proper sharpening position.

Do not make adjustments while the machine is running. Turn off the machine and allow all moving parts to come to a complete stop before attempting to make adjustments to the eye shield or either of the tool rests. Serious personal injury could occur.

G1036 Slow-Speed Grinder