How to Use a Rotary Punch for Leather

The rotary punch is one of the most versatile and widely used tools in the leatherworker’s kit. Whether you are making belts, bags, watch straps, or dog collars, punching clean, accurate holes is a fundamental skill that underpins almost every project you will ever attempt. In the United Kingdom, leather crafting has seen a significant resurgence in recent years, with the Leather and Hide Council of Great Britain reporting increased participation in craft-based leatherwork among hobbyists aged 25-45. This guide will walk you through everything you need to know about using a rotary punch correctly, safely, and to a professional standard.

What Is a Rotary Punch and How Does It Work?

A rotary punch – sometimes called a revolving punch or wheel punch – is a plier-style hand tool fitted with a rotating disc at one end. This disc holds between four and six hollow tubes of varying diameters. By rotating the wheel, you select the size tube you need, then squeeze the handles to drive the tube through the leather, removing a clean circular core of material.

The mechanism relies on a hardened steel anvil on the lower jaw of the tool. When you squeeze the handles, the selected tube drives through the leather and seats into a corresponding hole on the anvil, ejecting the leather plug (often called a chad) cleanly out the other side. The quality of the punch, the sharpness of the tubes, and the firmness of the anvil all contribute to the cleanliness of the resulting hole.

Rotary Punch Versus Hollow Punch

Many beginners confuse the rotary punch with a single hollow punch used with a mallet. The single hollow punch, when driven with a wooden or nylon mallet onto a cutting board, generally produces a cleaner hole with a crisper edge – particularly in thicker or harder leather. However, the rotary punch wins on convenience and speed, making it ideal for softer leathers, thinner garment hide, and quick repairs. For beginners in the UK sourcing tools from suppliers such as Abbey England in Sheffield or Identity Leathercraft in Norfolk, a rotary punch is typically the recommended first punching tool to acquire.

Anatomy of a Rotary Punch

Understanding the parts of your tool will help you use and maintain it properly:

• Handles: Usually made from steel with rubber or plastic grips. Longer handles provide greater leverage and make punching thicker leather easier.
• Pivot pin: Connects the upper and lower jaws. Keep this lubricated to prevent the tool from becoming stiff.
• Rotating wheel: Holds the punch tubes. A spring-loaded detent locks each tube into position when selected.
• Punch tubes: The hollow steel cylinders that cut the holes. Most sets include sizes ranging from approximately 1.5mm to 4.5mm in diameter.
• Anvil plate: The hardened plate on the lower jaw into which the punch tube seats. This plate must align perfectly with the selected tube.

Choosing the Right Rotary Punch

The UK market offers rotary punches across a wide price range, from under £5 at general hardware retailers to over £40 for professional-grade tools. As with most leatherworking equipment, the old adage of buying the best you can afford holds very true. Cheap punches from discount shops often have poorly hardened tubes that dull quickly, misaligned anvils that tear rather than cut, and handles that flex under pressure, reducing your accuracy.

Recommended Specifications for Beginners

When selecting your first rotary punch, look for the following:

• A tool with six punch sizes rather than four – the additional sizes (typically 2.0mm and 3.0mm) will prove invaluable for strap work.
• All-steel construction with a blued or stainless finish rather than chrome-plated, which can flake over time.
• A rotating wheel with a positive, audible click when each tube is selected, confirming proper alignment with the anvil.
• A working jaw capacity of at least 25mm, allowing you to reach holes positioned well away from the leather edge.
• Replacement tubes that are readily available – confirm this before buying, as some budget tools use non-standard sizes.

UK Suppliers Worth Considering

Several well-regarded UK-based suppliers stock quality rotary punches. Tandy Leather UK (operating through their European distribution), Le Prevo Leathers in Newcastle upon Tyne, and Pergamena UK all stock mid-range and professional tools. The Leatherworkers Guild of the UK maintains a list of vetted suppliers on their website and periodically runs regional workshops in cities including Birmingham, Edinburgh, and Bristol where you can handle tools before purchasing.

Understanding Punch Hole Sizes

Selecting the correct hole size is critical to the finished quality of your work. A hole that is too small will cause stress to the leather around a rivet or buckle tongue, leading to tearing over time. A hole that is too large will look untidy and fail to grip the fitting securely.

The table below provides a practical reference for common leatherworking applications and the punch sizes typically required. These are starting recommendations – always test on a scrap piece of the same leather before punching your project.

Measuring and Marking Hole Positions

Before you punch a single hole, invest time in accurate marking. Use a wing divider or a stitching groover to scribe a line parallel to the leather edge at the desired distance. For belt holes, the standard in the UK is to space the first hole 76mm (3 inches) from the tip end of the belt, with subsequent holes at 25mm (1 inch) intervals – a convention followed by most British belt and accessory makers. Use a steel ruler and a silver pen or a leather marking wheel to confirm equal spacing before punching.

Preparing Your Leather Before Punching

Good preparation makes the difference between a clean, professional hole and a ragged, torn one. This is a stage many beginners skip in their eagerness to get to the punching itself, but it is worth taking the time to do properly.

Conditioning and Grain Condition

Very dry leather – particularly vegetable-tanned hide that has been stored in a warm environment – punches poorly, with a tendency to crack around the hole edge. If your leather feels stiff and brittle, lightly dampen the surface with a clean sponge dipped in distilled water and allow it to become what leatherworkers call “cased” – slightly damp throughout but not wet on the surface. Cased leather punches more cleanly and with less effort. Allow the leather to return to its natural colour before proceeding, which indicates it has reached the correct moisture level.

Chrome-tanned leather, which makes up the majority of soft garment hide available from UK suppliers such as J. Hewit & Sons Ltd in Edinburgh (one of the oldest tanneries in Scotland, established in 1812), does not need casing but should be at room temperature. Cold leather straight from a vehicle or a cold workshop is noticeably more resistant to punching.

Backing Materials

Always punch on an appropriate backing surface. Options include:

• Dense polyethylene cutting board: Widely available from UK kitchen suppliers, this provides a firm surface that does not dull the punch tube as quickly as hardwood.
• Self-healing cutting mat: Suitable for lighter leathers and thinner gauges, but the mat can absorb the punch tube and cause slight hole distortion over time.
• End-grain hardwood block: The traditional choice, still recommended for mallet-driven punches but equally useful under a rotary punch.
• Marble or stone slab: Not recommended – the hardness will rapidly dull your punch tubes.

Marking Tools and Transfer Methods

In professional UK leather workshops – including those operating under the Leather Conservation Centre standards in Northampton – holes are marked with an awl impression rather than a pen dot where possible, as this creates a slight starter depression that helps centre the punch tube. For belt holes, a dedicated belt hole spacing jig is invaluable and can be made from a piece of scrap aluminium bar with holes drilled at 25mm centres.

Step-by-Step: How to Punch a Hole Correctly

With your leather prepared, your punch selected, and your backing in place, follow these steps for consistently clean results.

Step 1 – Select and Check Your Punch Tube

Rotate the wheel to the required size and ensure it clicks firmly into position. Look down the barrel of

Place your leather grain-side up on the cutting mat or end-grain block. Position your marked point directly beneath the chosen tube, taking a moment to align the punch visually from above. If you are working to a measurement rather than a pre-marked dot, use a steel rule to confirm placement before applying any pressure. Ensure the leather lies completely flat — any buckling or folding beneath the punch head will result in an off-centre or oval hole rather than a clean circle.

Step 3 – Punch the Hole

Apply firm, even downward pressure using the palm of your hand. For lighter leathers up to around 2mm in thickness, a single controlled push is usually sufficient. For heavier bridle or vegetable-tanned leather, you may need to apply considerably more force, or give the top of the handle a single firm strike with a mallet. Do not twist the punch while pressing — this distorts the cut edge. Once you feel the tube pass fully through the material and contact the backing surface, release the pressure and lift the punch cleanly and straight upward. Inspect the hole before moving on; a properly cut hole will have a sharp, smooth edge on both the grain and flesh sides.

Step 4 – Eject the Slug

In most cases the small disc of leather — known as the slug or chad — will remain in the barrel of the punch tube. Push it free using the ejector rod or a thin nail. Do not allow slugs to accumulate across multiple holes, as a partially blocked tube will compromise the quality of subsequent punches. Keep a small container nearby to collect the slugs; they are useful as leather cement testers or for practising edge finishing techniques.

Finishing the Punched Hole

Once the holes are punched, it is worth taking a moment to refine them before assembly. Run a smooth bone folder or the rounded end of a bamboo skewer around the inside of each hole to burnish the cut edge slightly, particularly on vegetable-tanned leather. This reduces the likelihood of tearing over time as a rivet, stud, or belt prong works against the edge. For riveted work, check that your chosen rivet post fits snugly without being forced — the hole should allow the post to pass through with light resistance rather than dropping straight through. A correctly sized, cleanly punched hole is the foundation of neat, long-lasting leatherwork, and a little care at this stage will be reflected in the quality of the finished piece for years to come.

Conclusion

A rotary punch is one of the most frequently used tools in a leather worker’s kit, and like all hand tools it rewards a methodical approach. Choosing the right tube size, preparing your leather surface properly, and working on a suitable backing surface will account for the majority of good results. Keep the punch clean, the tubes sharp, and the barrel clear, and the tool will serve you reliably across a wide range of projects. When the tubes eventually lose their edge — as they will with consistent use — replacement tube sets are widely available from leather suppliers across the UK and are considerably more economical than replacing the entire tool. With the techniques covered here, you should be well placed to produce consistently clean, accurately positioned holes in leather of any weight.