About this 3D model

My entry for the Esso challenge ! It's a pop-pop boat, the 250ml can has be used to make the floats of the catamaran. The boat move thanks to an "pop-pop" steam engine, i have made two version of the boiler, for the first you need to glue a sheet of aluminium with epoxy glue, the second boiler dont need glue. The two version of the boiler work, but the difficultie is to have a good sealing between the aluminium sheet and the boiler. You can see the engine work here : https://www.youtube.com/watch?v=Og3WMr8rtwk (I'm sorry if my english are bad..i'm a French Maker..! Do not hesitate if you have any question on the boat !)