UPGRADED!!!! My most advanced rocket engine build yet 

Engineers and designers can sign up of the free version of Onshape here: Onshape.pro/Ca...
Go check out my social channels to get more updates on future builds.
Instagram : / callum_long149
Below are links to the CAD Assemblies you've seen in the video.
Rocket CAD File : cad.onshape.co...
Needle Valve CAD File :
cad.onshape.co...
Ball Valve CAD File :
cad.onshape.co...