Instructions for Using Drill Bit Sharpening Jig

Written by chris baylor
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Instructions for Using Drill Bit Sharpening Jig
Twist drill bit (drill bit on black marble image by phizics from

A drill bit sharpening jig is designed for use with a bench grinder to sharpen twist drill bits. Because of the angle at which the bit is presented, there is no twisting of the bit necessary to get an even grinding. By holding the bit at the proper angle to the grinding stone, drill bits can be quickly and evenly sharpened. The jig's angle can be adjusted for metal-cutting or wood-cutting bits, or to give a bit more or less bite when drilling.

Skill level:

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Things you need

  • Bench grinder with tool rest
  • Drill bit sharpening jig
  • C-clamp

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  1. 1

    Mount the drill bit sharpening jig onto the tool rest on the front of the bench grinder. Clamp the jig in place.

  2. 2

    Place a drill bit into the jig, with the point of the bit facing the grinding wheel. Tilt the angle of the tool rest and jig so that the tip of the bit is flat against the wheel.

  3. 3

    Turn on the grinder. Hold the bit firmly against the edge of the sharpening jig. Slide the bit forward until it engages the grinding wheel.

  4. 4

    Raise the tip of the bit as you slide the bit forward, cutting an even grind across the entire face of the bit tip.

  5. 5

    Rotate the bit 180 degrees and repeat the previous two grinding steps on the other side of the bit.

  6. 6

    Inspect the tip of the bit. If the two ground edges aren't of equal length, regrind the shorter of the two edges until their lengths are equal.

Tips and warnings

  • Use the curve and angle of the grinding wheel to cut the curve of the bit. Do not twist the bit as you grind.
  • When working with power tools, always wear appropriate safety gear, including safety glasses.

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