Wooden Hydraulic Excavator STEM Model Kit
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Wooden Hydraulic Excavator STEM Model Kit
💧 A digger arm driven by water in syringes — press one end and the other end moves.
✨ Key Features
💧 Hydraulic Arm – Water-filled syringes move the boom and bucket, with no motor involved.
🦾 Multiple Joints – More than one axis moves, so the arm can actually reach and lift.
🔧 Built By Hand – Flat wooden parts plus the tubing and syringes.
📘 Illustrated Guide – Step-by-step pictures.
🏗️ Mirrors Real Machines – Full-size excavators work on exactly this principle.
📐 Boxed At 26.2 x 13.5 x 5.5 cm – Flat packed.
💖 Why You’ll Love It
Pressure moving through a tube is hard to imagine and easy to see here.
It is the kit children keep operating long after it is finished.
No batteries at all, which surprises people.
👧 Kids aged 8 years and above.