Drill-doctor XP Manuel d'utilisateur télécharger pdf (Page 12)

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Questions and Answers

1. Question:

Why was my drill bit sharpened improperly?

Answer:

The most common cause of improper sharpening is drill

bit alignment.

Key causes are:

1. Chuck not pushed all the way into the Alignment Port.

2. Drill not aligned in the Chuck Jaws correctly.

3. The type of drill requires an angle adjustment to

achieve the desired Chisel and Relief Angles. Try using

the Variable Alignment to adjust the Chisel and Relief

Angle (see page 18).

4. Chuck is dirty or the bit slipped out of alignment. See

pg 24, “Cleaning the Chuck.”

5. Too many rotations of a small-diameter bit results in

incorrect sharpening, and too few on a large bit

may not sharpen enough. See page 16, “Drill Bits of

Different Sizes.”

2. Question:

When I aligned the drill bit and sharpened it, why was

no material removed?

Answer:

This happens when the bit is not protruding out of the

Chuck far enough. You may have allowed the Alignment

Button to knock the drill back into the Chuck when align-

ing the bit. Carefully realign the bit in the Alignment Port

again. Make sure the drill bit is pushed all the way against

the Drill Stop before you release the Alignment Button.

3. Question:

I sharpened the bit. Why will it not cut?

Answer:

This happens when the Heel on the bit is higher than the

Cutting Edge (negative relief). To correct this problem,

follow the instructions in “Using the Variable Alignment to

Adjust the Chisel and Relief Angle” on page 18-19.

You may have a specialty drill bit. Slow and Fast Spiral,

Helix, Turbo Flutes, and Raised Margin drill bits are con-

sidered specialty bits. If you’re are getting insufficient

relief on specialty bit types, try aligning all the way in the

(+) setting on the alignment port. This will help improve

the sharpening on these types of bits.

4. Question:

What can I do about flat spots on the bit point between

the Cutting Edge and the Heel?

Answer:

The flat spots on a sharpened bit are the result of an

incomplete or paused half-turn of the Chuck in the Sharp-

ening Port. To correct, apply light, inward pressure and

rotate the Chuck smoothly while sharpening. Be sure to

complete the half-turns.

5. Question:

Why is the drill point off center?

Answer:

If the tip of the drill bit appears to be sharpened off center,

check the following items:

• You may not have done an even number of half-turns

when you sharpened and one face of the bit was

ground more than the other. Always use an even num-

ber of half-turns when you sharpen.

• Make sure that there are no particles between the

Chuck Jaws and the drill bit that could hold it off cen-

ter. Check the drill to ensure it is straight and free of

burrs.

• Make sure the bit is not loose in the Chuck.

• During the sharpening process be sure to keep the

same pressure on each half-turn.

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Drill-doctor XP Manuel d'utilisateur Page 12

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