Introduction: Kuna Puzzle Wheel: How to Assemble a Modular Plywood Pet Training Exercise Wheel

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We have designed a modular cat wheel. It is made from plywood.The design is based on the puzzle joint that assembles into a complete wheel. Each part is CNC milled with precision so it is very easy to assemble it.


I live in the relatively small flat and we have a big cat. Our cat goes on these crazy running sessions where it runs around the apartment. It has so much energy that it cannot figure out what to do it. So I've come up with an idea to make a wheel where the cats can pursue his energy needs.

e have designed a modular cat wheel, which is made from plywood.The design is based on the puzzle joint that assembles into a complete wheel.

Each part is CNC milled with precision so it is very easy to assemble.

If you and your indoor cats live in a small apartment—and likely even if you don’t—you may have noticed that they go on rambunctious tears around your home, running laps well into the night.

We wanted to create something that will be nice to look at aesthetically pleasing you and functional at the same time. The product comes packaged in the small box and within a few minutes your pet will be able to enjoy the wheel.

For more information visit Cat exercise wheel Kuna Wheel where you can order the cutting of the parts in case you down own a CNC machine.

Step 1: CNC Machine the Wheel

See Included plans you can use to cut your wheel. In this tutorial we need 5mm (covers), A1 10mm (puzzles) B1, C1 10mm, D1 5mm and 3mm (floor) plywood ,

You can adjust the slots and teeth depht of A1 5mm (covers), B1 12mm (puzzles), C1 12mm, D1 5mm and 3mm (floor) plywood.

You need to cut 16 times each of the parts A1, B1, C1 to complete the whole parts list for one wheel.

Cut D1 4 x to complete the floor.

Step 2: 3D Printers Try to Make a Smaller Version for You Hamster

3D printing takes time and are limited by size, we all know that. BUT! You can still have fun with this project import the drawings into and 3D package like 123d or blender extrude the edges and scale down the puzzles so it fits your 3D print area.

Step 3: Align All the Parts Into a Circle

Using a rubber mallet assemble the parts. They should fit in and hold firmly. See the Video how to do it.

Step 4: Use the Tension Strap to Assemble the Floor

Bend the wood and use a strap to keep it in place. Slide it into the slots of the first completed circle. Re-use the strap for the rest of the parts.

Step 5: Assemble the Next Circle on the Floor

After slotting in the floor add the next circle and slot it in like on the video. You may need to use some strenght but please take care as plywood can break if too much force is used.

Step 6: Repeat the Steps Until All Parts Are Used

We have designed the last bits to cover up the joints so it looks nicer. Please use a drill and screw to mount it in place when all is assembled. No need for any glue!

Step 7: Slot in the Base for the Wheels

Follow the number and slots to assemble the base. Currently the base is still under development and the plans will be released as soon when its complete for public. You can adjust the wheels so they run smooth on the edge of the wheel.

Step 8: Tada! Flat Materials Form a Complete Working Wheel for Your Pet!

You can add matting to the floor to your preference. Now go find a cat or small dog and train him with toys, food and lots of love to get him going. After 1-2 days of training my cat spends at least an hour or even two getting on the wheel and running by itself.

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