Power ToolsCutting tool
Mitre Saw
A circular saw on a pivoting head over a fence, cutting to a set angle rather than to a marked line. Repeatability is the point.
What it does
- Cutting repeatable lengths to a stop
- Angled cuts for joints and trim
- Cutting section and board square to the fence
Materialswhat it is used on
All materialsWhat to look forthe judgement calls, before the spec sheet
- Cross-cut capacity decides what the tool can be used for. A saw that will not cut a 100 mm board at 45° sends that part of the job back to a hand saw.
- Slide or fixed head: a sliding saw cuts wider stock at the same blade size, which is usually the cheaper route to capacity than buying a larger machine.
- If angles are going to be set and re-set, the detents and the positive stops matter more than the maximum angle range.
Misuse and safetythe ways this tool causes rework
- The fence is a reference surface, not a support. Cutting a long board without supporting the far end puts a tipping load on the saw and can pull the workpiece into the blade.
- Blade guard retraction and the kerf block behind the fence are adjustable. A worn kerf block means the cut breaks out at the back.
Projects that call for itand what it is doing on each one
All projectsFrequently asked questions
Mitre saw or circular saw?
A mitre saw if the cut repeats and the stock fits under it; a circular saw if the cut is in a sheet or a length too big to bring to the saw. Both cut wood, and the choice is about geometry rather than power.
Does a sliding saw cut deeper?
It cuts wider, not deeper. Depth of cut follows the blade diameter; the slide lets the same blade pass through a wider piece.