FT012 rudder mount for aluminum rudder

Rudder block mount for the [75mm aluminum rudder](http://www.banggood.com/75mm-Metal-Suction-Water-Rudder-For-Remote-Control-RC-Boat-p-87798.html?p=8E052132107122015126).

Untested - will go in the water in a couple of days.
Printed with an Up Mini in ABS - M3 thread cut into afterwards.
The metal pipes are a press fit (mount with light hammer blows).