Drill Doctor dd300 drills Mode D'Emploi

This drill bit point  is considered a  general pupose geometry.

It is used for drilling soft or mild materials such as cold rolled

steel, aluminum, and wood. Typically the standard drill bit is

made of High Speed Steel (HSS).  These drill bits are

sometimes Titanium Nitride (TiN) coated.  They are easily

sharpened with your 250 Handyman.

This drill point has an additional set of cutting lips along the tip

or chisel edge of the drill. It can be High-Speed Steel, Cobalt

and Carbide. Split point drill bits can be sharpened many times

with the 250 Handyman.  However they work best when the

split-point is present.

Masonry drill bits are easily sharpened with your 250

Handyman.  The 250 Handyman sharpens the bit with a radial

(curved) grind. The masonry drill bit you sharpen with your

250 Handyman will drill well.  

Please see the video for a complete demonstration.

Keep in mind that learning to sharpen drill
bits is like learning to ride a bike: it takes a
few tries to get it right.  Expect to sharpen a
couple of drill bits before you get
comfortable with your 250 Handyman.  

1. Size the chuck using the procedure in Step 1, Figure A and B).

2. Press in the pusher button and insert the chucked drill bit into the alignment tube. Slowly release the pusher
button allowing the clamp arms to grab the bit and pull it to the drill stop.

3. Make certain that the flats on the chuck are engaged with the flats inside the alignment tube. Slide the chuck all
the way into the alignment tube. Using the alignment viewer visually check that the drill bit is up against the
drill stop. If it isn’t push the drill bit up against the drill stop. Remember the clamp arms need to be in the
narrowest width of the drill bit fluting. If they are not, turn the drill bit until they are and then tighten the chuck. 

NOTE: The chuck jaws should be aligned straight within the chuck.  Look into the back of the chuck at the chucked
small bit to check them.  If they are not straight then slightly loosen the chuck knob until the jaws are straight.

4. Sharpen the small bit with a light pressure and only two white-mark to white mark rotations.

1. Use the procedure in Steps 1, 2, and 3 to sharpen large drill bits.

2.  The large drill bits will take more white mark to white mark rotations. Sharpen the entire drill face from
cutting lip to heel.

3. Large drill bits will require increased pressure directed into the sharpening tube. Note the sound in the
video and try to duplicate that pressure.

4. It may take a couple of complete sharpenings to re-sharpen an especially dull large drill bit.

1. Size the chuck using the procedure in Step 1, Figure A and B).

2. Press the pusher button, and insert the chucked drill bit into the alignment tube. Push the drill bit to the drill stop
and release the pusher button. NOTE: The  clamp arms will not align the masonry drill bit .

3. To align the masonry bit, start with the carbide insert in a verticle position, then turn the bit to the right to
an approximate 1:00 to 2:00 o’clock position. Tighten the chuck knob securely.

4. Start sharpening with four white mark to white mark rotations initially.  Add an even number of rotations until the
insert is sharp.

For Your Own Safety,

Read Instruction Manual Before Operating Tool.

Never touch internal parts of the sharpner when
the sharpener is on. The rotating diamond
grinding wheel can cause injury.

Wear Eye Protection.

It is necessary to give your Drill Doctor

®

a simple cleaning.

Regular cleaning insures proper function and protects your
Drill Doctor

®

. 

Shake out the bit shavings from the sharpening tube by

turning the Drill Doctor

®

upside down. Vacuuming works

also. Clean inside the alignment and sharpening tubes with a
dry cloth. To clean the chuck: Step 1. Loosen the chuck
until the chuck is apart. Step 2. Using compressed air or a
small brush remove all grinding particles from the chuck
knob, pusher and jaws. Re-assemble carefully, making sure
that all of the jaws are in their respective grooves.