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Sharpening drill bits


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This is a fairly frequently asked question, but is difficult to explain in words.

I've drawn the diagrams below in the hope that it will help.

Although the subject of sharpening drills is HUGE, what I've drawn below will do for 99% of holes through most materials, especially mild steel.

If it doesn't work so good on a particular material, try making the drill bit more or less pointy.

If the drill bit keeps going blunt, slow down the drill speed.

sharp1.gif

And my top tip for easier drilling with big (>10mm) bits:

sharp2.gif

Si

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