How to Cut Tile at a 45 Degree Angle? | Miter Cuts That Fit

An outside corner is where tilework usually shows its seams — two square-cut edges meet and one side juts out like a little shelf.

The process is straightforward once you know the order: mark the tile, clamp it, set the saw’s bevel, feed it slowly, and stop short of the glazed face, then polish the edge. Skip one of those steps and the corner will show it — a chipped lip that grout can’t hide.

What A 45-Degree Tile Cut Is

A 45-degree tile cut is a bevel that slopes the tile’s back edge so two pieces meet flush at an outside corner. Tile pros call it a miter cut, and it’s the standard treatment for corners on countertops, window sills, and wall edges because it hides the unglazed side of the tile.

Cutting through the glaze is the classic error — it chips the front surface and leaves a weak, jagged seam.

Cutting Tile At 45 Degrees Without Chipping The Glaze

The working order is mark, clamp, set the bevel, cut slow, and finish — with the cut stopping short of the glaze so the front edge stays intact. Run the same routine on every corner and the results stay consistent.

1. Mark the cut line on the tile face. A pencil or fine marker on the glazed surface is all you need; the line shows exactly where the bevel has to end.
2. Secure the tile so it cannot shift. On a wet saw, hold it flat against the table and fence; for hand work, clamp it to a stable bench. A tile that moves mid-cut gives you a wandering angle and a ruined corner.
3. Set the saw to a 45-degree bevel. On most wet saws that’s a pivot at the rear of the motor head or a tilting table, often with a 45-degree stop that clicks in. If the saw has no bevel adjustment, you’ll need a jig — more on that below.
4. Feed the tile slowly at constant speed. On a thick tile, make a shallow scoring pass first, then complete the bevel on a second pass. Cutting the glaze is the single biggest cause of chipped edges.
5. Finish with a diamond sanding or buffing pad. Work the bevel until the sliver is gone and the edge is smooth, then dry-fit the two tiles against each other. When it’s right, they meet flush at the corner with the glaze unbroken across the front.

Rushing any of these steps causes the usual failures: cutting straight through the glaze, letting the tile shift because it wasn’t clamped, and forcing the whole bevel in one aggressive pass. Thin or brittle tile needs the slowest feed of all, so plan on two light passes instead of one hard one.

What Tools Can Make The Cut?

A wet tile saw handles most 45-degree tile cuts, a tile and masonry saw adds power for porcelain, and an angle grinder with a diamond blade covers small jobs. Manual snap cutters cannot make a bevel at all — they only score and snap straight lines.

Before buying or renting, check that the saw actually supports bevel work, because not every model does. Husqvarna’s MS 360 tile and masonry saw, for instance, advertises 22.5-degree and 45-degree bevel cuts and switches between plunge and miter cutting. On a saw without a bevel head, you’ll need a tilting-table setup or a shop-made jig: Fine Homebuilding’s jig method rides the tile past the blade at a true 45-degree angle using two triangular plastic squares.

For touch-ups and tight spaces, an angle grinder with a diamond blade works, but the motor matters on dense material.

Once you know you need a real bevel-capable saw, choosing between models is the next question — the best 45 degree saws for tile on this site compares the wet saws and masonry saws that genuinely handle this cut.

Between the table and the steps above, one rule carries the whole job: the glaze is the finish, so cut toward it and stop short of it. Do that and outside corners come out tight, chip-free, and ready for grout.