Cutting & Measuring
Rotary Cutter
A rotary cutter is a circular blade on a handle, rolled along a ruler to cut straight lines through several layers of fabric at once. It cuts faster than shears and more accurately along a ruler, which is why quilters rely on it. It also cannot turn a corner the way shears can, needs a self-healing mat to survive, and will cut whatever is in its path.
| Specification | Value |
|---|---|
| Blade diameter | 28, 45 or 60 mm |
| Blade type | Rotary, replaceable |
| Safety | Retractable guard or locking cover |
| Handle | Straight or ergonomic |
| Use | Straight cuts, multiple layers |
| Replacement | Blades blunt after heavy use |
Technical parameters
| Parameter | Detail |
|---|---|
| Layers | Up to 6 with a 45 mm blade |
| Angle | Keep the blade vertical, not tilted |
| Ruler | Use a heavy acrylic ruler as a guide |
| Mat | Self-healing, always underneath |
| Pressure | Firm and even, one pass |
| Direction | Away from the body |
Safety
A rotary cutter blade is exposed whenever the guard is open and will cut fingers as easily as fabric. Always close the guard after every cut, cut away from your body, and keep your guide hand behind the ruler. Never cut toward yourself, and never leave the blade open on the table.
What it is for
A rolling circular blade that cuts multiple layers at once and needs a mat underneath. Fast, accurate, and unforgiving of fingers.
Compatible fabrics
Compatible stitches
Working notes
- Always close the guard between cuts, even if you are coming straight back.
- Use a heavy ruler and keep the blade against it, not against your fingers.
- A blunt blade needs more pressure and skips — replace it rather than push harder.
- Cut on a self-healing mat; the blade will ruin a bare table and itself.
Related tools
Fabric Shears
Bent-handle shears that keep the fabric flat on the table while the blade cuts. The tool a tailor buys once and keeps for thirty years.
Cutting Mat
A self-healing mat that protects the table and the blade, printed with a grid for squaring up.
Quilting Ruler
A thick acrylic ruler with a printed grid and angle lines, used as the guide for a rotary cutter.