I have to make a roller coaster for a physics project and the demensions of the project can be no larger than the mase of 1 meter by .8 m and 1.5 m tall. A golf ball is the object that must travel on the track and it must go through a loop and go off a 10 cm jump and travel for 20 seconds. My question is... What would be a good item to use for the tracks? I didn't know if there is a type of wood I could use or a type of putty/clay. Any good tips? thanks If anyone wants to look at the project sheet I can attach that.