No assembly is required.
I used pla, but most filaments should work well.
I did not design the flexi rex, but the skis are my original model.
If you like flexi rexes and you like skiing, then this model is for you. It prints quickly and uses little filament. It prints without supports, at least for my printer. It should take between 15-30 minutes for a high-speed printer with a 0.4 mm nozzle.
Have fun!
p.s. I re-uploaded this for a contest.