How to Draw and Cut a Knife Template

Every knife starts as a drawing before it’s ever a piece of steel. A template, a physical pattern you trace onto stock, is what turns that drawing into something repeatable and accurate, and it’s one of the simplest steps to skip that ends up costing the most time later.

Why Use a Template Instead of Freehanding

Freehanding a design directly onto steel with a marker makes it very easy to end up with a blade that’s not symmetrical, a spine that doesn’t sit straight, or proportions that looked fine in your head but not on paper. A template lets you work out those problems on paper first, where mistakes cost nothing, and then transfer a design you’ve already confirmed you’re happy with.

Step 1: Draw the Design on Paper

Start with a full-size drawing, not a scaled sketch, so proportions transfer accurately. Draw a centerline first and build the blade symmetrically around it if the design calls for symmetry. Include the full profile: blade shape, ricasso, tang shape, and overall length, so the template captures the entire knife, not just the blade.

Step 2: Make the Template Material

Cardstock or manila folder material works for a one-off design, but hardboard (like 1/8″ Masonite) or thin plastic sheet holds up much better if you plan to build the same design more than once, tracing a soft paper template repeatedly wears down its edges and slowly distorts the shape. Cut the template shape out carefully with scissors or a hobby knife, staying exactly on the drawn line.

Step 3: Check Symmetry Before Cutting Steel

Fold a symmetrical template along its centerline (or trace it, flip it, and compare) to confirm both sides actually match before it ever touches steel. This is the single easiest point to catch and fix an asymmetry, correcting it after the blade is already cut out of steel means grinding away material you can’t put back.

Step 4: Transfer the Template to Stock

Lay the template on the steel and trace around it with a fine-point scribe or marker, a wide marker line adds imprecision that compounds once you start cutting. Mark the centerline and any key reference points (choil location, plunge line, tang shape) directly on the steel as well, not just the outer profile.

Step 5: Rough Cut Before Grinding

Most makers rough out the profile close to the line with a bandsaw, angle grinder, or hacksaw before ever touching the belt grinder, leaving the final precise work (getting exactly to the line, establishing bevels) to the grinder. Cutting exactly to the line with a bandsaw alone is possible but slower and harder to control than roughing close and finishing on the grinder.

Reusing and Refining Templates

Keep templates that work well; a proven design saved as a durable template means every future build of that pattern starts from a design you already know is balanced and functional. It’s common to make small refinements to a template between builds (adjusting the belly, tweaking the ricasso) as you learn what you’d change, rather than redesigning from scratch each time.

Do I need CAD software to design a knife?

No. Paper, a pencil, a ruler, and a compass or French curve are enough for a fully functional template. CAD and digital design tools can help with precision and repeatability once you’re building a lot of the same pattern, but they’re not required to get started.

What material makes the best reusable template?

Thin, rigid material that holds a clean edge under repeated tracing, 1/8″ hardboard, G10 offcuts, or thin polycarbonate sheet all work well. Avoid anything that flexes significantly, since a flexing template can distort the traced line.

How do I fix an asymmetrical design after it’s already cut into steel?

Usually by grinding the wider side down to match the narrower side, since you can only remove material, not add it. This is exactly why checking symmetry on the paper or template stage, before cutting steel, saves the most time and material.