How to make a balance
Tips: Must be done with the help of parents!
Tips: Must be done with the help of parents!
1. First cut the plywood into A, B, C, D.
2. Open at the bottom end of B. The middle opening of C and D.
3. Insert the three thin strips as shown in the figure.
4. Pin A to the upper middle section of B, but be careful not to nail it, so you can move freely.
5. Cut the crescent-shaped target with a plywood and mark it with a scale.
6. Cut a small strip and fix it on A with universal glue, as shown in the figure.
7. Cut two wafers of equal size.
8. Tie four small holes on each side.
9. Cut a small slot on each side of A.
10. Use a thin wire to tie the disc and the balance is made.

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