Most people mean a precision craft knife or hobby knife when they say “exacto knife.” These are slim, pen-style tools that hold a small replaceable blade for fine cutting and trimming.

• Common terms: precision knife, hobby knife, craft knife, light‑duty utility knife.
• Typical blade: a fine‑point blade (often called a #11), used for detailed cuts.
• Handles: aluminum or rubberized barrels; some are retractable, others use a safety cap.

On product pages, you’ll often see the blade style and duty level noted. If you’re replacing blades or choosing a set, match the blade type to your handle and project needs for best results.

A precision craft knife is handy for detailed, light‑duty cutting and trimming. It’s often used in:

• Paper crafts: cardmaking, scrapbooking, stencils, and photo trimming.
• Vinyl and film: weeding decals and trimming edges.
• Models and minis: balsa, basswood, foam board, and plastic sprues.
• DIY details: light scoring, deburring, and small pattern cuts.

For best control, work on a self‑healing cutting mat and make several light passes instead of pressing hard. These tools are not designed for thick materials or heavy boxes; a heavier‑duty cutter may be a better choice for those tasks.

Choosing a good craft knife depends on your projects and comfort. Consider:

• Grip and ergonomics: rubberized or textured barrels help control; anti‑roll features can reduce drops.
• Blade compatibility: fine‑point blades (like #11) suit detail work; chisel or curved blades help with specialty cuts.
• Safety features: caps, retractable mechanisms, and secure blade locks can add peace of mind.
• Blade changes: look for simple twist‑lock or tool‑free swaps.
• Kits vs. single: sets with multiple blades and a case can be convenient if you craft often.

Check each product’s description for materials it’s best suited for and whether it accepts commonly available replacement blades.

Depending on what you’re cutting, a few alternatives can work:

• Rotary cutter: great for straight or curved fabric and paper cuts with a mat.
• Precision snap‑off cutter: slim, replaceable segments for light trimming and straight lines.
• Detail scissors: small, sharp tips for intricate paper and thread snips.
• Paper trimmer: fast, straight cuts on photos and cardstock.
• Die‑cutting tools: consistent shapes and letters without hand cutting.

Match the tool to the material and complexity of the design. Always use a stable surface and a cutting mat where appropriate, and take controlled, steady passes to help maintain accuracy.

Blade swaps can be done carefully with a few simple steps:

1. Prepare: work on a clear surface; keep the cap on until you’re ready.
2. Loosen the chuck: gently twist the collar to release the old blade.
3. Remove safely: use pliers or a thick cloth to pull the blade straight out.
4. Insert new blade: slide it in fully, then tighten the collar until snug.
5. Test: make a light test cut to confirm it’s secure.
6. Dispose properly: place used blades in a puncture‑resistant container before discarding.

Always follow the product’s instructions, keep fingers away from edges, and store the tool capped or retracted when not in use.