A 1/8-turn of the feed nut will move the bit six-thousandths - 0.006 - of an inch forward. The knurled feed nut at the back of the jig will push the bit forward in small increments so you can grind a smooth surface on the bit point. Turn on the grinder and sharpen one side of the bit with the side-to-side pivot motion. The screws on the nameplate adjust the friction of the pivot. The jig pivots side to side and sharpens the bit as it passes across the wheel. Step 5Īdjust the entire jig by loosening the wing nut and bolt that hold the jig to the bench and sliding the entire assembly until the drill bit almost touches the grinder wheel then snugly tighten the wing nut. Finger-tighten the clip at the top of the jig to hold the bit in position. Rotate the drill bit until the drill lip is against the lip rest to hold the bit in the proper position to grind. The lip rest is a piece of metal on the front of the sharpening jig held in place by two small screws. Adjust the lip rest of the jig up or down until it catches the cutting edge of the drill bit.
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