Scientific Experiment Homemade Air Excavator Science and Technology Make DIY Children Creative Educational Toys

1. Weight: 200g
2. Size: 20 x 15 cm
3. Material: wood + claw nails + screws + PC hose + syringe + woodworking glue
4. Applicable age: over 3 years old
5. Ability training: use hands and brains, cultivate interest, intellectual development, sense organs, parent-child communication, hand-eye coordination, interactive toys
6. Working principle: Designed by the principle of air driving, controlled according to the change of air flow, it can work like a simulated excavator
7. Warm reminder: The material of this kit is made by hand, and the process is complicated; the accuracy cannot be compared with that produced by the machine; please be careful
8. Difficulty of assembling: ☆☆☆☆After the production is completed, the pneumatic and hydraulic pressure of the syringe is used as the power to realize the movement of the mechanical arm. The disadvantage of the baby is that the production instruction manual is relatively simple, the production difficulty is 4 stars, and it is more complicated. It is recommended for children with strong hands-on ability to learn to make, or the parent teacher to guide