How to Make a Cat Scratcher Out of Cardboard | DIY Steps That Work

Your cat will shred a store-bought cardboard scratcher in weeks. The same shape built from recycled boxes costs almost nothing and lasts just as long. The trick is cutting the cardboard the right way so the exposed corrugation gives your cat the texture they actually dig into — and using the right glue pattern so the scratcher doesn’t fall apart on day three. Here is how to make one in about an hour with tools you already have.

What You Need Before You Start

The materials are all common household items. Most people own the tools already. You do not need a special kit or a trip to the craft store.

• Corrugated cardboard boxes — shipping boxes, cookie cases, Chewy trays. Flatten and remove tape and labels.
• Hot glue gun and glue sticks — standard craft size works fine.
• Razor knife or box cutter — a sharp blade makes clean cuts across the corrugation.
• Ruler or straight edge — for marking 1-inch and 2-inch intervals.
• Rubber bands — multiple, to clamp the stack tight during drying.
• Cut-resistant gloves — recommended when using a razor knife to cut stacks of cardboard.
• Catnip — optional, to encourage your cat to use the finished scratcher.

Why Cutting Across the Corrugation Is the Only Way That Works

Corrugated cardboard has two surfaces: the flat outer layers and the wavy inner ridges. A cat’s claws hook into those exposed ridges, which is the entire point of a cardboard scratcher. If you cut the cardboard parallel to the corrugations, the strip shows a closed edge with no ridges exposed, and your cat will ignore it. The cross-section cut across the corrugation reveals the ridges they want. All the reliable DIY guides agree on this one rule. Check a scrap piece before you start cutting your main supply.

Step-by-Step Assembly

Build in one sitting. The whole process takes about 60 minutes, plus drying time.

Step 1: Decide the Finished Dimensions

An 18-inch-long by 10-inch-wide scratcher is a good starting size. That fits most cats and leaves room for them to stretch while scratching.

Step 2: Cut the Boxes Into Strips

Flatten each box. Measure and mark strips that are the length of the scratcher’s longest side — 18 inches in this example. The strip width matters: 1 inch is standard for a vertical-stack scratcher, producing a block about 0.18 inches thick per strip. You need roughly six 1-inch strips for every inch of finished width. Cut each strip with a ruler and a sharp blade, making sure the blade cuts across the corrugation ridges, not parallel to them.

Step 3: Stack and Align the Strips Vertically

Set the strips on their cut edges so the exposed corrugation faces upward. Stand them side by side against a straight wall or a piece of scrap wood so the top edges are all level. Wrap one rubber band loosely around one end to hold the bundle in place while you work.

Step 4: Apply Hot Glue in Small Drops

Use one small drop of hot glue per strip. Apply the glue at the end opposite the rubber band, then press the next strip against it. Work your way toward the rubber-banded end — this keeps the stack flexible enough to adjust. Lay a second rubber band over each freshly glued section to hold the strips tight while the glue sets. Catbox Classics recommends this sequence because it prevents gaps from forming in the finished block.

Step 5: Let the Assembly Dry Completely

Leave the rubber bands on for at least 10 minutes. The glue needs that time to harden fully before the pressure comes off. If you remove the rubber bands too early, the strips will shift and gaps will open.

Step 6: Add a Base for Extra Stability (Optional but Better)

Cut the bottom 2 inches off a cardboard box to use as a tray. Measure 2 inches up from the bottom of the box and cut all the way around. Insert the glued strip stack into that tray. For a very sturdy bond, remove the stack, apply a bead of Gorilla Glue construction adhesive to the inside of the tray, reinsert the stack, and weight it with books until dry. This base keeps the scratcher from sliding on the floor and gives your cat a frame to grip.

Cardboard Strip Dimensions at a Glance

Common Mistakes That Waste Your Time

These are the pitfalls that turn a quick DIY into a frustrating afternoon project. Every one of them has a simple fix.

• Cutting with the corrugation. The most common error. The closed edge feels like solid paper to your cat and offers nothing to scratch. Always verify your blade is cutting across the ridges before you commit to a whole box.
• Using too much glue. A big glob of hot glue does not make a stronger bond. It oozes out between the strips and hardens into bumps your cat will avoid. One small drop per strip is enough.
• Skipping the rubber bands. Without pressure, the glue cools with the strips slightly separated. The finished scratcher will have visible gaps and will flex more than it should. Rubber bands are not optional.
• Gluing the strips into the tray permanently. If you want the base to be removable so your cat can flip the scratcher to a fresh side once one side wears down, place the stack into the tray without glue. This is a smart way to double the life of the scratcher.

Optional Frame for a Furniture-Grade Look

If you want the scratcher to look like a piece of furniture rather than a stack of taped cardboard, build a simple wooden frame. Use 2.5-inch by 0.25-inch poplar boards for the sides, mitered at the corners. Wood filler hides the seams if you are painting. Skip the wood conditioner unless you plan to stain the frame. Particle board or MDF is an even cheaper alternative for the base. Glue the cardboard strip stack into the frame with Gorilla Glue, clamp it, and let it dry overnight. Designing Parkside has a detailed build guide for this approach.

How Long Will a Homemade Cardboard Scratcher Last?

Finished, Ready for Your Cat

Place the scratcher on carpet or a rug so it does not slide. Sprinkle a pinch of catnip on the corrugated surface to draw your cat’s attention. Show them once by dragging their front paws gently across the ridges — most cats will take over from there. The scratcher works immediately, costs nothing if you already have boxes and hot glue, and is fully recyclable when it finally wears out. If you would rather compare ready-made options before building another one, our tested roundup of the best cat scratchers has you covered.