Hello I'm toying with the idea of creating a toy car ramp tower for my son. I'm alright with DIY stuff around the house but got this idea of making a spiral ramp around a rectangular structure.
I was wondering if there is any advice for creating the ramp its self, what type of wood would be the best, what methods can I use for bending / sloping it around and down the structure?
I'll draw up some proper plans but as a place holder I threw this bad boy together on paint 
