I was toying with the idea of making the blades extendible.
My plan was to use a remote control car motor. Placing a threaded rod on the drive shaft. the blades would be connected to a well greased bolt on the threaded rod. using the forward and reverse abilities of the motor, it would turn the threaded rod, thus moving the bolt and the connected blades forward and back. But for this build I will make the blades stationary maybe for a revisit I will give it a go.
Well, more to come.