FAQ
Common questions
What angle should I sharpen at?
Most western knives (German steel) want 20° per side — 17-22° is safe for the whole category. Japanese knives are typically 15° per side. If you're not sure: 20° is a safe default for any knife not explicitly sold as Japanese. Consistency matters more than precision. A wobbly 17° beats a perfect 15° held for one stroke.
How often should I sharpen versus hone?
Hone before every cooking session (30 seconds). Sharpen when the edge stops responding to the honing steel — for a home cook using a good steel, that's roughly every 2-4 months per knife. Sharp knife plus daily honing means you almost never need to sharpen.
Do Japanese water stones need to be soaked?
Traditional soaking stones (King, most budget combo stones) need 5-10 minutes submerged in water before use. Splash-and-go stones (Shapton, Naniwa Chosera) need only a few drops of water on the surface. Check your stone's instructions — soaking a splash-and-go stone won't damage it, it's just unnecessary.
How do I know when my knife is actually sharp?
Two tests. The paper test: a sharp knife slices cleanly through printer paper. The tomato test: a sharp knife skins a tomato using only the weight of the blade — no pushing. If it catches on the skin, keep sharpening. If it slips through, you're done.
Can I ruin a knife by sharpening it wrong?
You can remove more metal than necessary (especially with coarse stones) or gradually widen the bevel by holding an inconsistent angle. Both are recoverable — the knife just gets shorter over years. The genuinely ruinous move is an electric sharpener grinding at the wrong angle repeatedly, which can't be undone. A whetstone used badly is still better than that.
What is the difference between sharpening and honing?
Sharpening removes metal to create a new edge. Honing realigns the existing edge without removing material. Think of the edge as teeth that cooking rolls sideways — honing stands them back up, sharpening files them sharp again. A dull knife needs sharpening. A slightly underperforming knife that used to be sharp probably just needs honing.