What the Hydraulic Claw Kit Includes
The Make Your Own Hydraulic Claw kit from Kikkerland Design Inc gives you the materials to build a working lifting claw powered by water pressure. The kit contains die-cut cardboard pieces, PVC tubing, a 10 ml syringe, and screws. No motors or batteries are needed — the claw moves when you push the syringe plunger, demonstrating basic hydraulic principles.
This is a hands-on project for kids interested in how things work. The finished claw can pick up lightweight objects, making the science behind construction equipment and robotics tangible.
Kit Contents at a Glance
- Make Your Own Hydraulic Claw: Kit includes die-cut cardboard pieces, PVC tubing, 10 ml syringe, and screws. These are all the parts you need to assemble a functional hydraulic claw. No extra tools or glue are required, though adult help may be needed for assembly.

Make Your Own Hydraulic Claw
How to Build Your Hydraulic Claw
The following steps are based on what the kit supplies. Since the manufacturer does not provide detailed instructions in the catalog, use these general guidelines and your own problem-solving skills.
- 1. Punch out the cardboard pieces: Carefully remove the die-cut cardboard shapes from the sheet. Identify the claw arm, base, and support pieces by their shapes and any printed markings.
- 2. Assemble the claw mechanism: Fit the cardboard pieces together as shown on the packaging or using logical assembly. Use the screws to secure moving joints — the claw should be able to open and close freely.
- 3. Connect the syringe and tubing: Attach the PVC tubing to the syringe nozzle. Fill the syringe with a small amount of water (not included) to create the hydraulic pressure. Push the plunger to test the claw's movement.
- 4. Test and adjust: Operate the syringe to open and close the claw. If the claw does not move smoothly, check that the joints are not too tight and that the tubing has no kinks. Adjust the water level if needed.
What You Need to Know Before You Start
The catalog does not include step-by-step assembly instructions, so expect some trial and error. This makes the project a good exercise in engineering thinking and patience. Adult supervision is recommended for younger children, especially when handling the syringe and cutting cardboard edges.
The finished claw is not a heavy-duty toy — it works best for picking up lightweight items like foam balls or crumpled paper. It is designed to demonstrate a concept, not to replace a store-bought robot.

