Chips, rolls and broken tips: what can be repaired, and how

Blade damage falls into a few recognisable categories, and the right response depends on which one you are looking at:

Micro-chips usually come from hard cutting boards — glass, granite, ceramic plates used as boards — or from very hard Japanese steel (60+ HRC) meeting bones, fruit pits and frozen food it was never meant to touch. Drawer storage adds its share: blades knocking against other tools chip silently with every open and close.

Large chips typically have a single violent cause: twisting the blade inside a hard ingredient like butternut squash, chopping through chicken bones with a thin-edged knife, or a fall onto a tile floor. Rolled edges are the opposite story — gradual sideways pressure on softer German-style steel (54–58 HRC), accelerated by cutting at an angle or scraping food off the board with the edge instead of the spine.

Broken tips are almost always misuse of leverage: prying open jars and tins, separating frozen burgers, opening packaging. The tip is the thinnest, least supported steel on the knife, and it snaps rather than bends.

More than most people expect. Micro-chips disappear entirely during a normal professional sharpening, since restoring the edge removes more steel than the chip is deep. Rolled edges are the easiest fix of all if treated early. Large chips up to roughly 2–3 mm are routinely repaired with excellent results; the blade simply loses a barely perceptible amount of height. Broken tips of up to around 1 cm can be reground into a new, correctly shaped point.

The genuine limits: cracks that run up into the blade face, chips so deep that repair would leave the blade noticeably narrow, and breaks at the handle or through the tang. These are structural, not cosmetic, and an honest workshop will tell you when a knife has reached the end rather than charge for a repair that cannot hold.

The principle is always the same: grind back to clean steel, then rebuild the manufacturer’s geometry. For a chipped edge, the entire edge line is taken down evenly — never just a notch ground out at the damage, which would leave a wavy cutting line — until the deepest chip vanishes. The bevels are then re-established at the maker’s specified angle: 12–15° per side for most Japanese blades, 18–20° for German, finished and deburred so the repair is indistinguishable from factory condition.

A broken tip is repaired by reshaping from both the spine and the edge, blending a new tip that preserves the blade’s original profile — a German chef’s knife keeps its raised point, a santoku its sheep’s-foot curve. Done slowly, with water cooling and light passes, the steel never overheats; done carelessly on a fast dry wheel, the edge can be ruined by a single overheated pass that softens the temper. This is precisely why repair belongs with specialists.

Stop using a chipped knife on food you care about — micro-fragments of steel can detach, and every cut stresses the damage further. Do not attempt to file or grind it yourself, and do not keep honing a chipped edge; a rod cannot remove a chip and may worsen it. Wash the blade, dry it, and store it where the damaged edge cannot strike anything else.

A rolled edge is the one exception: a few gentle strokes on a honing rod may stand it back up temporarily. If the dullness returns within a day, the steel is fatigued and needs proper sharpening.

Chip and tip repair is part of every sharpening service we run from our Dubai workshop. Order online for 5 to 20 knives, note any damage when you book, and pack everything into the protective shipping kit we send — damaged blades travel safely in it too. A courier collects from anywhere in the UAE; each knife is assessed, repaired, and reground to its manufacturer’s specifications, then returned within 7 days. If a blade is genuinely beyond saving, we tell you before any work begins.