Either a bench grinder or a belt sander will work for sharpening bits. Just make sure that the guards on either one of these machines is less than 1/8″ away from the belt or wheel so that your bit doesn’t get caught between the guard!
Can Cobalt Drill Bits be sharpened?
Cobalt drill bits have a high resistance to heat, making them perfect for repeated use. But after a short time, the leading edge becomes dull and needs to sharpen. If you’ve got a bench grinder, you’ll sharpen the bits on your own.
What angle is used to sharpen drill bits?
The theory of drill grinding
They are at an angle of around 118 degrees to each other (point angle).
How do you fix a dull drill bit?
How to Sharpen Drill Bits
Examine your dull bits. Don your goggles and turn on the bench grinder. Hold the bit at this angle against the wheel for no more than four to five seconds. Pause after four to five seconds of grinding and dip the drill bit into the ice water to cool the metal.
Is titanium stronger than cobalt?
As mentioned in the detailing of cobalt and titanium’s scratch resistance, both metals have a similar hardness. But it was noted that cobalt was just a bit harder than titanium. As a result, it is able to have a much higher polish applied.
Is cobalt or titanium drill bits better?
Cobalt bits tend to be quite expensive. However, they are more durable and long-lasting than other options, including titanium. Because of this, they can often save you money in the long run.
Can titanium drill bits be sharpened?
Titanium drill bits are harder than cobalt, but cannot be sharpened as they’re coated, not solid titanium,.
