Hugo I like what you did here. Shows great ingenuity and this is the key to great inventions. Keep up the good work. You have a bright future ahead of you. My favorite quote I like to use: "You don't have to reinvent the wheel, You just need to find a new purpose for the wheel that was created". Good luck on the contest.
Homemade Tripod Wedge for SCT telescope
Top 40 Fallout Projects
R/C Steam Turret Tank