Intricate detail
The smallest rotary size is agile around miniature pieces, tight corners and detailed shapes.
Good for: mini appliqué, paper piecing, templates and precise craft work.OLFA rotary-cutter size guide
Smaller blades turn tighter curves. Larger blades build momentum through longer cuts and thicker or layered materials. Choose for the work you do most often.
The smallest rotary size is agile around miniature pieces, tight corners and detailed shapes.
Good for: mini appliqué, paper piecing, templates and precise craft work.More cutting capacity than an 18mm blade while remaining easy to steer through detailed pattern work.
Good for: curves, narrow strips, quilt shapes, garment details and templates.The most versatile starting size for general sewing and quilting, balancing manoeuvrability with efficient straight cutting.
Good for: quilt strips, blocks, garment cutting, patchwork and everyday fabric work.The largest rotary option powers through long runs, heavier materials and bigger cutting jobs efficiently.
Good for: multiple layers, long straight cuts, fleece, wool, leather and large projects.If you are buying your first rotary cutter: choose 45mm for the widest everyday usefulness. Add 28mm or 18mm for tighter curves, or 60mm when thick layers and long production cuts are your priority.
Comfort and control
Blade size decides the cutting scale; handle style changes how the tool feels and how the blade is exposed. Choose the mechanism you can operate confidently and comfortably.
Compatibility made clear
The diameter must match, and the exact blade model should be confirmed against the cutter’s product page or instructions. Never fit a blade simply because it looks similar.
| Cutter diameter | Standard blade family | Typical role |
|---|---|---|
| 18mm | RB18 | Intricate rotary and compatible compass cutting |
| 28mm | RB28 | Curves, templates and small pieces |
| 45mm | RB45 or compatible RB45H Endurance | Everyday sewing, quilting and craft |
| 60mm | RB60 or model-compatible 60mm blade | Long cuts, larger projects and layered materials |
A good mat protects the table, gives the blade a suitable cutting surface and provides useful grid references. Match its working area to the pieces you cut most often.
Mat care: store the mat flat and supported. Keep it away from high heat and conditions that could warp the surface. Use the printed grid as a guide, but rely on a quality ruler for critical final measurements.
A cutter is most useful when the blade, mat and ruler all suit the same job.
Sharp-tool essentials
Rotary blades are extremely sharp. Follow the instructions supplied with the exact cutter and keep every safety mechanism working as designed.
Clear answers before you cut
A 45mm rotary cutter is the most versatile first choice for quilt strips, blocks and general fabric cutting. A 28mm or 18mm cutter turns tighter curves and handles smaller shapes, while a 60mm cutter is useful for long cuts and layered materials.
Yes, suitable OLFA cutters can cut multiple fabric layers when the blade is sharp and the layers are stable. Capacity varies with cutter, blade, fabric and operator control, so test the stack and avoid forcing the tool.
Yes. Use a proper rotary cutting mat to protect the table, give the blade an appropriate surface and help extend blade life. Never run a rotary cutter directly over an unprotected bench or domestic cutting board.
A dull or damaged blade may skip threads, leave uncut sections, create ragged edges or require noticeably more pressure. Check that the cutter is assembled correctly; if performance remains poor, replace the blade with the specified model.
Many OLFA rotary cutters can be configured or used for either hand, but the procedure varies by model. Confirm the individual product instructions and install the blade and safety components exactly as shown.
A compatible rotary blade may cut both, but paper and abrasive craft materials can dull the edge faster. Many makers keep a clearly labelled fabric cutter separate so important fabric cuts stay clean.
Shop OLFA cutters, blades, mats, knives and scissors online from Direct Sewing for delivery throughout New Zealand, or visit our Henderson, Auckland showroom. Check individual pages for current models, sizes and availability.
Ready for cleaner cuts?
Start with a 45mm all-rounder or match the diameter to your specialist work, then add the correct spare blade, a self-healing mat and a stable ruler for a complete cutting system.
Rotary cutters and replacement blades are extremely sharp. Follow the instructions for the exact OLFA model, confirm blade compatibility and keep cutting tools away from children.