Sorry what? Why would your first step in building planes be to build a jet engine? That's crazy. If you want to build a jet engine then go for it, but if you r

Sorry what? Why would your first step in building planes be to build a jet engine? That's crazy. If you want to build a jet engine then go for it, but if you really just want to build planes then you can buy electric/piston/jet/rocket engines for much less than it would cost to build your own.