Cannon, compatible to Gravitrax

Hello,

this is our first project for our new 3D printer. We added a cannon to our Gravitrax equipment. It fires the ball which enters from above, into the direction the cannon is directed to.

As we are new to 3D printing, i do not add any recommendations about print settings, as experianced people might know even better how to get this printed. For us, the cannon barrel was a bit hard to print, but split in two sided, we finally were successfull.

Warning: The ball can be accelerated fairly fast, depending on the tightness of the rubber bands. Be sure the rubber bands are weak enough, not to harm anybody - as it is a childrens toy.