How do you make a cone shape?

[FireOfVoid]

I'm trying to build a star wars shaped ship and have the front coned like a pelta class frigates front(star wars)
Anyone know how I could do that without making it look completely derpy?

 

[TBB]

I haven't played the "newer" Starmade that often but there might be a tool in-game in advanced building mode. The same tool to create spheres. If not you will just have to be creative.