Leather Arm Guard Pattern: Step-by-Step Guide to Cutting and Fitting One

Updated November 2026

A leather arm guard pattern gives you a repeatable template for cutting a forearm guard that protects your bow arm from string slap and fits your arm closely enough to stay put while you shoot. In this guide you will take measurements, draft a simple pattern on paper, transfer it to leather, and set up the guard so it sits correctly on the inside of your forearm. The process takes a few hours and needs only basic hand tools.

What a Leather Arm Guard Pattern Needs to Do

Before you draw anything, it helps to know what the finished guard has to accomplish. A good pattern produces a guard that covers the area your bowstring crosses during release, stays in place without a tight strap, and leaves your wrist and elbow free to move. Most target archers wear the guard on the inside of the forearm, so the pattern is shaped around the ulnar side of the arm rather than a flat strip.

Shopping for one? See our guide: 4 Best Archery Leather Arm Guard Options for Target Archers (2026).

Three things make a pattern work well:

• The guard is long enough to cover the string path from the elbow crease to the wrist bone, with a small margin.
• The width matches the forearm circumference at the widest point, so the guard wraps without gapping.
• The strap or lacing points sit where your forearm doesn’t flex during the draw.

If you are still deciding whether to make one or buy a ready-made piece, the overview in DIY Leather Arm Guard: 5 Best Picks for Making or Buying One (2026) compares the trade-offs. Once you have decided to make your own, the steps below will get you there.

Step 1: Gather Tools and Materials

You do not need specialist equipment. Most of this list is standard leatherworking kit.

• Tape measure (flexible, in inches and centimeters)
• Pencil and a sheet of kraft paper or cardstock for the pattern
• Ruler or straightedge and a set square
• Vegetable-tanned leather, roughly 2.5 to 3 oz (about 1 to 1.2 mm) thick
• Sharp utility knife or round knife with a fresh blade
• Cutting mat or scrap board
• Leather punch or awl, plus a stitching groover if you plan to stitch edges
• Rivets, buckle, or lacing cord, depending on your closure
• Edge beveler and burnishing tool for finishing

Vegetable-tanned leather is the usual choice because it holds a shape when it is moulded and wet-formed, and it can be stamped or dyed. Chrome-tanned leather is softer and more pliable but stretches more over time, which can change how the guard sits.

Step 2: Take Accurate Measurements

Good fit comes from measurements taken with your arm in shooting position, not hanging loosely at your side. Stand as you would at full draw, with your bow arm extended and slightly bent at the elbow, and have a helper take the readings if you can.

1. Guard length: Measure from about 1 inch below the inside of the elbow crease to the wrist bone on the inside of the arm. Add 1 inch to allow for a small overlap at the wrist.
2. Forearm circumference: Measure around the forearm at its widest point, usually about 2 to 3 inches below the elbow. Add 0.5 inch for ease so the guard closes without pinching.
3. Width at the wrist and at the elbow: Measure the arm at both ends of the guard path, because the arm narrows toward the wrist. You will shape the pattern to reflect that taper.
4. String path: Note where your string crosses the forearm at full draw. Mark this with a fabric tape or a pencil dot on your skin, then measure from the elbow to that mark. It tells you how far the guard needs to reach toward the outside of the arm.

Write every number down with its units. Errors creep in when readings are mixed between inches and centimeters.

Step 3: Draft the Pattern on Paper

Use kraft paper so you can fold, trim and test without wasting leather. Think of the finished guard as a curved strip that follows the arm’s shape.

Lay Out the Base Rectangle

Draw a rectangle equal to your guard length by the forearm circumference plus ease. This is the flat version of the guard before shaping. Mark the centerline lengthwise so you can keep the sides symmetrical.

Shape the Taper

Most archers find the guard works best if it is narrower at the wrist than at the elbow end, because the forearm tapers in the same direction. Reduce the width at the wrist end by roughly 0.5 to 1 inch depending on your measurements. Draw a gentle curve rather than a straight angled line, since sharp corners are more likely to dig in.

Add the Closure Tabs

If you are using a buckle or strap, extend each side slightly beyond the main body and mark the position of the buckle or rivet holes. For a laced guard, add eyelet positions along both edges, spaced about 0.75 to 1 inch apart. Keep the lacing points on the outer edges of the guard so the laces are not pressed against your skin.

Test the Paper Pattern

Wrap the paper pattern around your forearm and secure it with masking tape or a loose piece of string. Check three things: the guard covers the string path, it does not restrict elbow or wrist movement, and it stays put when you lift your arm into the draw position. Adjust the paper and retest until it feels right.

Step 4: Transfer the Pattern to Leather

Lay the leather flesh side up on the cutting mat. Trace the paper pattern with a pencil or scratch awl, making sure the lengthwise centerline is aligned with the grain. Mark rivet, buckle or lacing points with a small awl dot. Keep marks light so they do not show on the finished grain side.

Cut slowly with a sharp knife, following the curve with smooth strokes rather than sawing. Clean cuts give crisp edges that bevel and burnish more easily.

Step 5: Shape, Finish and Attach the Closure

Moulding the Leather

Dampen the cut piece lightly with water, let the surface darken and firm up slightly, then wrap it around your forearm or a cylindrical form. Hold it in place with tape while it dries. Vegetable-tanned leather will keep the curve it dries in, so take your time with this step and check the fit as it dries.

Edge Finishing

Bevel the edges with an edge beveler, then dampen and burnish them until smooth. Burnishing seals the fibers and prevents fraying, which matters because the edges will rub against sleeves and clothing.

Attaching Rivets, Buckles or Laces

Punch holes at your marked positions, set rivets or thread laces through eyelets, and check that the closure tightens evenly. A common mistake is setting the closure too tight at first; you want the guard to hold firmly but allow a finger to slide under the edge.

Common Mistakes to Avoid

• Measuring in a relaxed position. Your forearm changes shape when your elbow bends. Always measure in shooting posture.
• Cutting the pattern too narrow. A narrow guard looks neat but can slide off during the shot. Keep the ease allowance.
• Using leather that is too thick. Heavy leather is stiff, hard to mould and can bunch under the forearm. Stay near 2.5 to 3 oz.
• Skipping the paper test. A single paper check costs nothing and prevents wasted leather.
• Leaving rough edges. Unfinished edges catch on clothing and fray quickly.
• Setting closures too tight. A guard that restricts circulation or wrist movement will affect your form.

Tips for a Better Fit

• Make a second paper pattern with slightly different width if you are unsure of your measurements, and compare both on your arm.
• Wear the same long-sleeve shirt you shoot in when you test the fit, since clothing changes how the guard sits.
• Oil the leather lightly after finishing to keep it supple, but avoid over-oiling, which can soften the edges too much.
• Re-check the fit after a few weeks of shooting, because leather can relax slightly as it breaks in.

Recommended gear

A few supplies make the job smoother. A sharp round knife or utility knife with fresh blades gives clean cuts, a stitching groover helps if you plan to stitch the edges, and an edge beveler produces the finished look most archers want. Search for these items to compare options:

• Round knife for leatherwork: Gives controlled curved cuts on thin leather. View on Amazon
• Edge beveler set: Creates a smooth, rounded edge that resists fraying. View on Amazon
• Vegetable-tanned leather sheet, 2.5 to 3 oz: The right weight for a forearm guard. View on Amazon

FAQ

Can I use any leather for an arm guard?

Vegetable-tanned leather in roughly 2.5 to 3 oz is the most common choice because it holds a moulded shape and takes edge finishing well. Thicker or chrome-tanned leather can work but usually needs more adjustment.

How long does a leather arm guard last?

With regular use and basic care, a well-made guard can last for years. Owners often report that the closure hardware wears out before the leather itself, so check rivets and laces periodically.

Should the guard sit on the inside or outside of the forearm?

Most target archers wear it on the inside of the bow arm, where the string passes during release. Some archers adjust position slightly depending on their form, so test before you commit to a final placement.

Do I need to stitch the edges?

Stitching is optional. Burnished edges are durable enough for many archers. Stitching adds strength and a traditional look but takes more time.

How tight should the closure be?

The guard should hold firmly without moving when you lift the arm, yet allow a finger to slip under the edge. Tight closures can affect circulation and wrist movement.

Is a paper pattern really necessary?

It is strongly recommended. Paper costs almost nothing, and a test fit catches sizing errors before you cut into good leather. If you want a ready-made template to start from, see Archery Arm Guard Pattern Free: How to Make Your Own Step by Step.

Where can I find more pattern options?

Pattern styles vary by archery discipline. For a broader view of designs and the fit considerations for each, the guide Archery Arm Guard Leather Pattern: A Practical Guide (2026) covers several layouts. Archers with unusual arm sizes may also find Long Archery Arm Guard: How to Choose, Fit and Use One Properly useful for sizing adjustments.

Conclusion

A leather arm guard pattern turns careful measurement into a guard that fits your arm and protects it through the shot. Take measurements in shooting posture, test a paper draft before cutting, and finish the edges well. Work at a steady pace, and you will end up with a guard that suits your draw. If you have a medical condition affecting your arm or wrist, check with a physician or physical therapist before changing how you wear equipment.

Related reading

• Archery Arm Guard Leather Pattern: A Practical Guide (2026)
• DIY Leather Arm Guard: 5 Best Picks for Making or Buying One (2026)
• Archery Arm Guard Pattern Free: How to Make Your Own Step by Step
• Women's Archery Arm Guard: How to Choose and Fit One Properly

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