Problems with chisel sharpening? We tackle the common problems and their solutions.
Problem:
Honing marks show more on one side of the bevel than the other.
Solution:
Narrow chisels (1⁄4 - 1⁄2") present a small contact area between the bevel and the stone, making it hard to keep the blade flat as you hone. Use a honing guide or practice first on wide chisels to develop a routine before moving on to narrow ones.
Problem:
Honing marks appear wider at the bottom than the top or are only on one end of the bevel.
Solution:
Check your progress frequently as you hone and concentrate on keeping your handle angle consistent, even if that means lightening up on your honing pressure.
Problem:
Honing marks don't reach the center of the bevel.
Solution:
Wheel grinders leave a shallow concave, called a hollow ground, so grinding marks in the center are the last ones removed by a flat stone. Continue honing until you have a uniform surface, which signals a flat bevel.
Problem:
Multiple facets show on the bevel.
Solution:
If your chisel looks like this after grinding, go back and even out the bevels until you have a uniform surface. If this is a result of honing, focus on making stable, consistent arm and hand movements as the bevel travels back and forth across the stone.
Problem:
Not knowing when to stop.
Solution:
This bevel is nearly finished. (Note the remaining scratches on the upper left.) A few more passes on the 8,000-grit stone will leave a polished surface and a sharp edge. The ideal bevel will reflect a flash of light off the surface the way sunlight flashes off a mirror.
