More Model Rocket Parts

These are a set of enhanced model rocket parts that are compatible and interchangeable with my other model rocket parts at https://www.thingiverse.com/thing:7011356. See also the payload bay at https://www.thingiverse.com/thing:7067681.

This includes more fin designs, nose cones and reinforced tubes. Also added a tool that allows you to balance a rocket in order to find its center of gravity.

Added a V2 tube option to allow addition of a lug and structural reinforcements. The V3 tubes allow for double thick walls, which provide added strength (and weight). V3 tubes also have an option for adding a lug to tubes.

Can add 2, 3 or 4 fins to a nose cone. Three fin options provided where the bottom stage can have fins that are not flat at the bottom. The V8 stage and boosters provide one screw hole that can be used to secure the rocket engine, which is typically not needed as these are typically well secured by friction.

Not all of the STL files are provided, as there are way too many pe