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Cutting tools and rulers

Rotary cutters and replacement blades from Olfa and Kai, self-healing cutting mats, acrylic quilting rulers and squares from Omnigrid, Omnigrip and Quilter's Rule, scissors and shears, and ruler-work templates from Westalee Design and Amanda Murphy for quilting on the machine. Rulers are listed by size and markings; blades by diameter; mats by size and whether they rotate.

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Choosing cutting tools

The 45 mm rotary cutter is the standard for quilting cotton and the blade size most mats and rulers assume; 60 mm cuts through more layers and batting; 28 mm turns curves and trims appliqué. Replacement blades are sold by diameter and fit any cutter of the same diameter — brand does not matter for the blade.

A 6-by-24-inch ruler is the one most quilters cut strips with; a 12.5-inch square trims blocks; a 6.5-inch square trims half-square triangles. Omnigrid rulers have yellow-and-black markings that read on light and dark fabric; Omnigrip adds a non-slip backing.

Ruler-work templates are a different thing: thicker acrylic (usually 1/4 inch) that a ruler foot rides against while you quilt on a domestic or long-arm machine. They need a ruler foot that matches your machine's shank — the Sew Steady and Westalee pages list the foot by machine brand. Do not use a standard cutting ruler for ruler work; it is too thin and the foot can climb over it.

Mats should be replaced when the surface no longer heals and the blade catches in old cuts — it is the mat, not the blade, that is dulling your cutting.

Frequently asked questions

Do Olfa blades fit a Kai cutter?

Blades are interchangeable by diameter — any 45 mm blade fits any 45 mm cutter. Buy by size.

What is the difference between Omnigrid and Omnigrip?

Same rulers and markings; Omnigrip has a non-slip backing and is the one to choose if your ruler slides on fabric.

Which ruler foot do I need for ruler-work templates?

One that matches your machine's shank and the template thickness. Westalee makes ruler feet for most domestic brands; the template pages name the foot to pair with.