Cutting edge parallel to collet holder Notch

—If you are using a standard drill bit, find the closest metric size. For example, turn the dial to "8" for a 3/8" drill bit.

—If you are sharpening aircraft extension or deep hole drill bits, select a number on the dial that is double the drill bit diameter. For example, set the calibration dial to "10" for a 5mm aircraft extension drill bit.

5.Fully insert the collet holder with the drill bit into the calibrating device, so the holder and device are flush and the pin fits into the collet holder notch as shown in Figure 12.

Notch

Figure 12. Collet holder notch aligned with

adjusting device pin.

6.Turn the collet holder clockwise until it stops, push the bit forward as far as it will go into the calibrating device, then turn the bit clockwise until it stops, as shown in Figure 13 & 14.

Figure 13. Drill bit positioned in calibrating

device, top view.

H8203 Professional Drill Sharpening Machine

Figure 14. Drill bit positioned in calibrating

device, side view.

7.Thread the locking ring fully onto the collet holder, then remove the collet holder and drill bit from the machine.

8.Tug on the bit to verify that it is locked in the collet.

—If the bit moves, use a smaller collet size and repeat Steps 1-8.

9.The drill bit is properly calibrated when the notch on the collet holder and the drill bit cut- ting lip are parallel, as shown in Figure 15.

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Figure 15. Cutting edge parallel to collet holder

notch.

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