S BIT PEN HAR 2. S 1. ALIGN BI TS 3.
Thank you... for buying your Drill Doctor® 400. It will become a valuable tool because you will now have sharp drill bits before a project, during a project, and after a project. I am very proud of the quality of our products and I am equally proud of the great people at Drill Doctor who design and produce them. If you have questions or need help with your Drill Doctor, please call 1-800-597-6170 and one of our customer representatives will be there to help.
Contents English Getting to Know Your Drill Doctor® ............................ 3 Identifying Basic Drill Bits ........................................... 4 Anatomy of a Drill Bit ................................................. 4 The Drill Doctor® Sharpening Process ......................... 5 Aligning the Drill Bit ................................................... 5 Grit Tube Attachment .................................................. 7 Sharpening the Drill Bit .....................................
Safety • Carefully read this User’s Guide before operating the Drill Doctor. • When using electric tools, basic safety precautions should always be followed to prevent the risk of fire, electric shock and personal injury. • Always disconnect the Drill Doctor when cleaning or inspecting. Make sure the switch is in the OFF position before plugging in the power cord. • Do not use in wet or damp locations. • Do not abuse the cord. • Wear eye protection when using or cleaning the Drill Doctor.
Getting to Know Your Drill Doctor® Flat Spot Chuck Cam Chuck Knob Alignment Hole Flat Spot Window Cam Guide Sharpening Hole Alignment Button Wheel Access Cover Power Switch (at cord end) Split Point Hole www.DrillDoctor.
Identifying Basic Drill Bits The Drill Doctor® is most efficient when used to resharpen a drill bit’s original point angle. With its standard diamond grinding wheel it will sharpen high-speed steel, cobalt, TiN-coated, carbide and masonry drill bits. It has been designed and engineered to sharpen three of the most common drill bit types: Standard Point This general purpose point is used for drilling softer materials like cold rolled steel, aluminum, and wood.
The Drill Doctor® Sharpening Process The sharpening process includes 3 easy procedures: 1. Align the bit in the Chuck. 2. Sharpen the bit. 3. Split the point (if you choose). Be sure to complete all three of the procedures to sharpen and split a bit and always sharpen the bit prior to splitting it. Aligning the Drill Bit (See page 13 to align and sharpen a Masonry drill bit.) 1. 2. 3. 4. www.DrillDoctor.
With your free hand, insert the Chuck into the Alignment Hole— make sure the flat spots on the Chuck match the flat spots in the hole. 5. Flat Spots 6. 7. At this point, the Chuck should be inserted into the Alignment Hole with the flat spots hidden, and the Chuck should be locked in the hole. With the Alignment Button held in, push the drill bit forward until it is against the Drill Stop. Look at the drill bit through the Window over the Alignment Hole—it should be against the Drill Stop.
10. Press the Alignment Button in and remove the Chuck from the Alignment Hole. Tighten the Chuck Knob firmly. You are now ready to sharpen the drill bit. Grit Tube Attachment The grit tube attachment is not critical for the function of the Drill Doctor; however using it offers the following benefits: • Extends the life of your Drill Doctor by removing the grit created when sharpening your drill bits.
Sharpening the Drill Bit 12. Insert the Chuck into the Sharpening Hole. It will be easier to sharpen the bit if you stand up. 13. Cam Guide Cam White Mark Align one of the white marks on the Cam with the Cam Guide, and push the Power Switch to the ON (I) position. Before sharpening you should know: • Keep the Cam in contact with the Cam Guide as you sharpen—push the Chuck straight into the hole. • Only light pressure is required—let the diamond wheel do its work.
Identifying Correctly-Sharpened Drill Bits (And What to Do With Those That Aren’t!) Correctly Sharpened Chisel Point Cutting Edge Heel The entire surface from the Cutting Edge to the Heel will have a finely ground surface without ridges or indentations. And, the Heel will always be lower than the Cutting Edge. Misaligned Cause The Chisel Edge is ground flat. Bit Clamps did not grip drill bit at narrowest point in the aligning process (Page 6).
Split Points Split point drill bits prevent walk-around on the material before they begin to cut. This feature is described as self centering. The need to center punch is effectively eliminated. A standard drill bit chisel point has to wear an area in the middle of the hole to be drilled before the cutting edges will remove material. Due to its additional cutting lips along the chisel edge, a split point will begin cutting immediately.
Check the tip of the bit carefully to determine that both sides of the bit are split equally. Compare it to this illustration. If it does not match, study the information below. 4. Identifying Correctly Split Drill Bits (And What to Do With Those That Aren’t!) Correctly Split Split lines are nearly straight across. Split line Undersplit Solution Split lines do not meet in the center but Chisel Edge remains. Not enough material has been removed from the heel of the drill bit.
Sharpening Bits of Different Lengths and Diameters Drill Bits Of Different Sizes Too many rotations of a small diameter bit may result in incorrect sharpening and too few on a large bit may not sharpen enough. 3/32 inch bits—use 2 to 4 half-turns, 1/8 inch bits—use 4 to 6 half-turns, 3/8 inch bits—use 6 or more half-turns. Large Drill Bits Large drill bits (3/8" to 1/2") will require increased pressure and more half-turns (20 or more) of the Chuck.
Aligning and Sharpening Masonry Drill Bits 1. Insert your masonry bit in the Chuck in the same manner as other bits (See page 5). 2. Push the Alignment Button back to the housing and hold it in through Step 4. Insert the chucked drill bit to the stop. Bit Clamps are not used when aligning masonry bits. 3. 12:00 1:00 2:00 9:00 3:00 6:00 4. 5.
Questions and Answers 1. 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 aligning the bit. Carefully realign the bit in the Alignment Hole again. Make sure the drill is pushed all the way against the Drill Stop before you release the Alignment Button. 2. Question: I sharpened the bit.
3. 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 number of half-turns when you sharpen. • Make sure that there are no particles between the chuck jaws and the drill bit which could hold it off center. • Make sure the bit is not loose in the Chuck.
6. Question: Why are my small drill bits grinding off-center? Answer: After aligning the small bit, look into the back of the chuck and determine if the jaws are straight against the bit. If the jaws appear to be out of line, move the Chuck Knob slightly to the left just until the Jaws straighten. Do not loosen the Chuck Knob or the bit will loosen and the alignment will be lost. If that happens, you will need to align the bit again. 7.
9. Question: Why does the drill bit back up into the Chuck during the sharpening procedure? Answer: Make sure the bit is tight in the Chuck before sharpening. Your Chuck may be dirty. Follow the steps for cleaning the Chuck on page 18. 10. Question: When splitting, why don’t I hear a grinding sound? Answer: The Chuck is not seated properly in the flat spots of the Splitting Hole.
Drill Doctor® Maintenance After sharpening 20 to 25 drill bits, the drill bit grinding dust will accumulate in the grinding compartment. Grinding particles will promote wear in the Alignment, Sharpening, and Splitting Holes and Chucks, so cleaning on a consistent basis can add life to your machine. Before any maintenance or cleaning is performed, be sure to unplug your Drill Doctor.® Removing the Wheel Cover Unplug the Drill Doctor.
Determining If a Change of the Diamond Sharpening Wheel Is Required Reverse the grinding wheel before you replace it. The grinding wheel supplied with the Drill Doctor® is designed to give you long and trouble free service, with an average of more than 200 sharpenings. The diamond wheel may need to be changed if: 1. Sharpened drill bits burn or turn blue no matter how fast or slow you rotate the chuck. 2.
Remove worn wheel by twisting slightly and lifting wheel off shaft. Install new wheel and reinstall wheel retainer and screws. Don’t over-tighten mounting screws. Remove the wrench and replace the wheel access cover before turning on the machine. 4.
Your Drill Doctor is warranted to be free of defects due to workmanship or design for 1 year from the purchase date. If your Drill Doctor fails to operate, or if any operating problem occurs, contact Drill Doctor Technical Service toll free at: 1-800-597-6170 (U.S. and Canada only) Do not return this product to the store where you purchased it. Do not attempt any service or repairs other than those suggested by a Drill Doctor Technical Service Representative (TSR).
Phone: 1-888-MYDRILL (693-7455) Professional Tool Manufacturing, LLC P.O. Box 730 210 E. Hersey St. Ashland, OR 97520 USA Fax: 541-552-1377 Email: tech@DrillDoctor.com Web: www.DrillDoctor.
Phone: 1-888-MYDRILL (693-7455) Professional Tool Manufacturing, LLC P.O. Box 730 210 E. Hersey St. Ashland, OR 97520 USA Fax: 541-552-1377 Email: tech@DrillDoctor.com Web: www.DrillDoctor.com Drill Doctor® is a registered trademark of Professional Tool Manufacturing, LLC.
