Thx, appreciate the comment! The 3d printer (coocheer) on ebay was well worth the money. freeCAD is an easy to use platform. so for under 200 us$ you can start 3D printing your parts. There is a bit of a learning curve, such as setting up the printer, getting the heat correct, speed, fill-in, and a few other things. I use an older version of CURA (14.12.1) because it is EASY to use. After a few dozen designs, you learn to create all the little parts you need in a few minutes on freeCAD and load them to an SD card and then print them. While these are printing, you can be doing something else.
Newer 3D printers allow bluetooth/wireless or direct print, but honestly, the version I use is so simple and my designs are not very technical, so that is all I need right now. You can get pretty detailed at 0.1mm resolution....
Here is a pic after some detailing of the Elefant tank.... I am in the middle of writing an RC Arduino code to add some super polyphonic sounds for the engine and a bunch of other things. You could easily adapt this or many other sound boards to your boat and have some really cool things happening....
https://www.youtube.com/watch?v=g0b_fDJZg80
