To sharpen an auger bit, you need a specialized auger-bit file. Hold the auger bit upright in a vise, then file the bit’s lip ...

And it works on even the hardest ceramic and alloy knives.

Still looking? See more results on Wirecutter. We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Liam McCabe By my count, there ...