Custom Knex Roller Coaster Model

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Custom Knex Roller Coaster Model

Hi everyone, I want to share my own Roller Coaster Model. It's from a school project and I decided to make something different.
Like you can see, the structure of the Roller Coaster it's not made it with Knex pieces. Instead of that, I used PVC tubes that 
simulates the original structure of a real Roller Coaster. I cheer up everyone to try to change the Knex structure for something different, It's a challenge!
For taking advantage of the space, I decided to create a spiral lift. It works very well and it looks very beautiful.
I have to say that it's my first Knex Roller Coaster and I know that I made a lot of mistakes, but I think that I did something different.
Why don't you look it?
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