Following the link below for RNAF's build process in rcgroups.com:
Below is the link to download some free optional parts (hoist, radar nose dome, search light, and tail boom handle bars):
This is a 3D printed scale Bell 412 fuselage designed for the OMP M1 helicopter. It is not tested with other direct drive helicopter, but it may fit the other helis that are similar in size such as the Eachine E150, and the Goosky S1. The great thing about the OMP M1 is the power to weight ratio, which allows it to fly the 3d printed fuselage and still maintain its flight performance.
Additionally, the fuselage design incorporates six magnetic points, using 12 neodymium magnets (3mm diameter x 3mm long) to connect the front and middle sections. This design facilitates easy access for changing the battery.