Materials:

Steps:

1. Fix building blocks and universal rods with screws.

2. The set of universal rods is turned inward, as shown in the figure. The iron plate is fixed with 4mm screws, and the left 10mm screw is screwed by half.

3. Install 1.5 iron shaft in the fifth through hole, and the corresponding position is 7mm cap screw.

4. Install the white double-hole shaft sleeve at the position shown in the figure, and fix it from the back with 10mm screw.

5. Install the tee and shaft sleeve on a 5cm iron shaft and fix them in the position as shown in the figure. Install the return rubber band and combine the universal rod and fix them with 10mm screws.

6. Install the white tee and 7mm cap screw as shown in the figure.

Tie two rubber bands together and install them on the cap screws. Bend the top of the iron sheet with pliers, and then fold it with a ball of waste paper as a bullet. Whew! Aim and fire! Although the paper bomb is small and powerful, children should be careful not to aim at people and animals when playing.

When we hang a paper bullet on the rubber band of the gun and stretch it backwards, the rubber band is deformed, which stores energy and makes the rubber band tend to return to its original state. This energy is called elastic potential energy. When we let go of our hands, the elastic band releases the elastic force, and the generated force causes the paper bomb to be projected.

Making a simple pistol toy for your baby can make your baby play happily all day, and you can also take your baby to learn to make simple crafts and use your hands and brains to make your baby grow up healthily and happily!