How to make a ruler catapult

You will need

Short ruler
Elastic band (quite thick)
Bulldog clip-Small enough to fit on the end of your ruler


                                                               I FORGOT PICTURES SO I DREW THEM!

Step 1 I dont really know what to call it . The final step?

Put the bulldog clip on the end of the ruler then put the elastic band onto the bulldog clip. Then use pencils to fire.

Comments

[hamsTheMan]

150cm that isnt short?