User manual DRILL DOCTOR 300

[. . . ] 5 Sharpening the Drill Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Sharpening Bits of Different Lengths and Diameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Drill Doctor® Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 User-Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] If the tube does not spring back, please contact our Technical Support group for assistance. Cutting Edge Heel Cause Dirty Chuck. Solution Insert a drill bit into the Chuck, tighten it, then press the bit against a hard surface. If so, clean the Chuck as described on Page 16. www. DrillDoctor. com 9 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 16 to 20 half-turns. Large Drill Bits Large drill bits (3/8" to 1/2") will require more half-turns (20 or more) of the Chuck. A well-sharpened bit will have a smooth surface from cutting edge to heel. It may take two or three complete sharpenings (repeat all steps) to resharpen a very dull or chipped large drill bit. Short Drill Bits Often bits smaller than 1/8" in diameter are so short they will not stick out of the back of the Chuck. After inserting a small bit into the Chuck and while holding the Alignment Button in, insert the Chuck into the Alignment Port. Then, insert a finger into the back of the Chuck Knob and push the bit forward against the Drill Stop. Look through the Window and make sure the Bit Clamps grasp the bit at the narrowest point when you release the Alignment Button. Tighten the Chuck Knob, but Correct before sharpening small bits, look through the back of the Chuck to be sure all Chuck Jaws are straight against the drill bit. If the Jaws appear to be out of line, move the Chuck Knob slightly to the left just until the Incorrect Jaws straighten--do not loosen the Chuck Knob or the bit will loosen and the alignment will be lost. Now, sharpen the bit in the usual manner. 10 www. DrillDoctor. com 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. <MODIFY ART> Push the Alignment Button back to the housing and hold it in through Step 4. While looking through the window, start with the carbide tip of the bit straight up and down (12:00 and 6:00), and then turn it 1/8 turn to the right (the carbide tip should point to between the 1:00 and 2:00 o'clock position when looking at a clock face). Start with four halfturns and then add as many even number of half-turns as needed. Remember, you are only sharpening the carbide insert. 3. 9:00 12:00 1:00 2:00 3:00 6:00 4. <MODIFY ART> 5. Note: The Drill Doctor will place a curved grind on the carbide insert, altering the appearance of the factory point. www. DrillDoctor. com 11 Questions and Answers 1. Question: Why was my drill bit sharpened improperly? Answer: The most common cause of improper sharpening is improper drill bit alignment. 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 10, "Drill Bits of Different Sizes. " In order to correct these problems be sure the Chuck is all the way in the Alignment Port with the flats entirely hidden. The drill point must be against the Drill Stop and the Bit Clamps must be at the narrowest part of the drill bit. To correct, apply light, not firm inward pressure and rotate the Chuck smoothly while sharpening. Question: Why is the chisel edge on my drill bit flat? Answer: During the alignment process the Bit Clamps were gripping the high points of the drill bit. Realign the drill bit making sure that the Bit Clamps are located in the narrowest section of the bit. Question: Why are my small drill bits not cutting? Answer: After aligning the small bit, look into the back of the chuck and determine if the jaws are straight against the bit. [. . . ] The product has been operated for the purpose intended as described in the operating instructions and has not been abused or mishandled in any way. The product has not been dismantled and no service or repairs have been attempted other than those suggested by a Drill Doctor TSR. The Return Goods Authorization number (RGA #) (assigned by the Drill Doctor TSR) is written on the shipping label. Please make certain to package items in such a way as to eliminate further damage during shipping. [. . . ]