Rotary Cutter Sizes: Match Blade Diameter to the Cut Before Choosing the Handle
Rotary cutter sizes change how easily a blade follows curves, crosses long straight paths, and works within the material limits documented for a particular cutter. Bigger is not automatically better: smaller diameters suit tighter geometry, while larger diameters are more at home on broad, continuous cuts. For many sewing tasks, 45mm sits in the middle