Restoring Broken Drills, Shortening Drills If the sharpened surface is not uniform, repeat steps 3-9 being sure to loosen the collet (slightly) before putting it into the depth station each time.Continue step 7 until the sound of sharpening is near nothing (it will get slightly quieter with each pass).Rotate the collet and drill while pressing inward towards machine, follow cam profile as you rotate (you’ll feel it follow a “wobbling” motion path).Insert the collet and drill into the sharpening station (3) with the while lines aligned with the reference mark next to the sharpening station opening.Turn on the Drill Doctor and wait for it to reach maximum RPM.While pressing collet and drill bit towards the depth stop, release the lever (2) and then rotate the drill bit while tightening the collet.Press on lever (2), and then insert chuck and drill into depth station.Insert drill into collet (The Drill Doctor instructions call this a “chuck”) with drill able to slide with medium friction.Ensure you have the correct relief angle and drill point angle set.Here’s what you do each time you sharpen a drill bit: Bit alignment finger release (you press to open up alignment fingers, and then release while twisting drill bit to “settle in” to the correct angle)Īs I showed in the video, sharpening drill bits with the Drill Doctor is fast and easy.Relief angle setting: Normal (lever, points to settings: middle with drill bit profile shown, +, – ), depth adjustment station (hole).Once you familiarize yourself with the knobs, levers, and stations, you’ll be off and running in no time. The Drill Doctor 750 (keep in mind, this has been replaced with a newer model, the 750x) has a simple user interface.
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