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How do I resharpen Speedbor flat bits?

Use a small file to sharpen the top of the cutting edge and inside the spurs and on the side of the point. Try to follow the same angles that were ground on the bit when it was new. When sharpening the top of the cutters, make as many strokes on one side as on the other even if you don't think it's necessary. This keeps the cutting edges balanced.

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