OLFA Compass Circle Cutter CMP-1 — 6" Max Diameter, Screw-Fixed Replaceable Blade, Left/Right-Handed

The OLFA Compass Circle Cutter (CMP-1) is a precision handheld tool that slices perfect circles up to 6 inches across in paper, film, cardboard and light wood using a screw-fixed, replaceable blade.

If you make signs, scrapbooks, models, photography masks or craft projects that require clean circular cuts, this compact compass-style cutter puts a sharp, adjustable cutting edge where you need it. Built for both right- and left-handed users, the CMP-1 arrives preloaded with an OLFA COB-1 carbon tool-steel blade and includes extra blades so you can work longer between changes. The robust knurled knob and sliding diameter adjustment let you dial in exact measurements while the tool-free blade replacement keeps downtime to a minimum.

How precise and large are the circles this cutter makes?

You can cut circles from very small diameters up to 6 inches (152 mm) with consistent, clean edges. The sliding adjustment lets you set the radius accurately, and the fixed pivot ensures the blade tracks true without wobble.

• Maximum diameter: 6 inches (152 mm)
• Adjustable slide mechanism for exact radii
• Screw-fixed pivot for stable rotation
• Produces smooth, repeatable circles

What materials will the CMP-1 handle without tearing or gumming?

The cutter is designed for thin to lightweight materials that need a sharp edge rather than brute force. It cleanly slices paper, card, vinyl, acetate and other thin plastics and can handle light balsa or basswood with steady, controlled passes.

• Ideal: paper, cardstock, film, vinyl, acetate
• Works on: leather, thin fabric, cardboard
• Possible with care: thin/light wood (multiple passes)
• Not intended for thick plywood, metal, or dense composites

How do you change blades and switch hand orientation?

Blade changes require no separate tools: loosen the large knurled knob, remove the old blade, and insert a new COB-1 blade. The screw-fixed design also allows quick repositioning so you can mount the blade for left- or right-handed cutting.

• Tool-free replacement: loosen knurled knob
• Comes with six COB-1 replacement blades
• Carbon tool-steel blades for long edge life
• Swap blade side to suit left or right hand use

Will this cutter hold up to regular workshop or classroom use?

OLFA builds the CMP-1 with durable materials and a design that professionals trust, so it tolerates repeated use when maintained properly. Keep spare blades on hand and store the cutter safely between sessions to preserve the edge and alignment.

• Durable construction and reliable sliding mechanism
• Replaceable blades extend tool life
• Compact, lightweight for portable workstations
• Simple maintenance: blade changes and cleaning

Who is this for? The OLFA Compass Circle Cutter CMP-1 suits hobbyists, graphic artists, photographers, teachers and sign-makers who need a precise, portable way to cut circles without expensive rotary cutters or complicated setups. If you value crisp edges, quick blade swaps and the ability to work ambidextrously on paper, film or light wood, this cutter is a practical addition to your toolkit.