Tile cutter: what it does and when to reach for it

Learn what a tile cutter does, when to use it, and how to score and snap a tile cleanly.

TC-01Know what a tile cutter is and when to use oneA manual tile cutter has a hardened wheel that scores a line into the tile's glaze, then a lever or wings snap the tile cleanly along that line. Use it for straight cuts in ceramic or porcelain wall and floor tiles. It is not the right tool for curves, notches around pipes, or very thick or heavily patterned porcelain, which need tile nippers or a wet saw with a diamond blade. The mistake beginners make is reaching for an angle grinder for a simple straight cut, when a score-and-snap tool does the job with far less mess and risk.

TC-02Measure the gap and mark the tileMeasure the actual gap the tile needs to fill, not the tile next to it, and remember to leave room for the grout line (usually 2-3mm on each side, check your tile spacers). Mark the cut line clearly on the face of the tile using a pencil or chinagraph marker, and use a set square or the tile cutter's own guide to keep the line straight. The common mistake is forgetting the grout gap and cutting the tile a few millimetres too big, so it won't fit.

1 each · Chinagraph marker or pencil

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TC-03Score the tile in one firm, single passLine the marked line up directly under the cutting wheel, holding the tile firmly against the guide. Push the wheel across the entire length of the tile in one smooth, continuous stroke with firm, even pressure. It should feel like scratching a hard scoring line, not sawing back and forth. Going over the same line more than once blunts the wheel and gives an uneven snap, which is the most common beginner mistake.

TC-04Snap the tile along the score lineStraight after scoring, use the cutter's snapping mechanism (a lever or wings that press down either side of the line) with firm, even downward pressure centred exactly over the score. The tile should separate into two pieces with a clean, straight edge. Waiting too long after scoring, or pressing off to one side, often causes the tile to crack unevenly or shatter instead of snapping cleanly.

TC-05Use tile nippers for curves and notchesFor curved cuts or small notches, such as fitting round a pipe, a tile cutter cannot help because it only cuts straight lines. Instead use tile nippers, a small pliers-like tool with a cutting edge, and nibble away tiny pieces at a time until you reach the shape you need. Trying to force a straight-line snap around a curve is a common mistake and usually breaks the tile in the wrong place.

TC-06Check the cut is rightA good cut has a straight, even edge with no chips or jagged bits, and the two halves should match up exactly if you hold them back together. Offer the cut tile up to the gap; it should sit with a consistent grout line all round, not tight in one spot and gappy in another. If the edge is slightly rough, a tile file or rubbing stone can smooth it gently, but a wobbly or curved edge means the cut needs redoing, not filing.

TC-07Handle cut tiles and tools safelyFreshly cut tile edges are sharp enough to cut skin, so handle them with care and wear gloves if you're doing several. Sweep up small offcuts and shards straight away, as they're easy to miss on the floor and can cut bare feet later. Wear safety glasses when snapping, since small chips can fly off. If you're using an electric wet tile saw instead of a manual cutter, keep the cable and plug well away from the water tray, and only ever plug it into an RCD-protected socket.

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