Today will learn how to make a submarine!

ATTENTION: some tasks will require adult supervision (cutting tin can)

Materials needed:

• Bottle (Plastic or Glass)
• Electric motor (small)
• Wires
• 1.5V AAA battery
• Rubber band
• small screwdriver
• scissors
• Hot Glue gun
• tin can (or other tin foil)

Step 1 – make a hole in the centre of the bottle lid

Using a small screwdriver of a sharp object, make hole in the centre of the lid.

The size should be small, exact size to fit the motor axle.

If the hole is larger, the water will flow and flood the bottle.

submarine bottle lid

Step 2 – Glue the motor to the lid

be sure you do not glue the motor axle so that it moves freely when battery is connected

glue motor on bootle lid

Step 3 – Connect the battery to the motor

Using a rubber band attach the wires to each end of the battery

Attach the wires to the motor pins (just bend into the small holes of the pins or you can even solder if you have a soldering iron)

submarine motor wires battery

Step 4 – Make the propeller using a can

draw with a marker the shape of the propeller on the tin and cut with strong scissors

ATTENTION cutting the tin will create sharp edges and small sharp pieces, be very careful to flatten out all sharp edges (you can use a nail file)

submarine propeller from tin can

submarine cut propeller

Step 5 – make a hole in the propeller (same as the one in the lid)

attach the propeller on the motor axle on the outside and put a little hot glue to make it stick strongly on the axle.

Step 6 – attach all wires, insert the battery and mount the lid strongly on the bottle

ATTENTION – if the propeller has sharp edges touching the edges when motor is active can harm your fingers.

submarine assembled

Step 7 – test the submarine in the bathtub

Probably the submarine will just float, you can use some coins to fill it just enough to go under the water.

Video Link: http://teakdata.com/blog/wp-content/uploads/2017/08/IMG_5282.mp4