A totallly change box printed in plastic, fully functional with N-1-2-3-4-R, that can be armed familiarly step by step, only using the video and documents added bellow for all the pieces. Its allow to learn of functioning, gear relations and 3D printing.
The tools and screws that its needs, are easy to find in a shop.
ASSEMBLY GUIDE= youtu.be/2OFyleBvPhM
For assembly you need:
12 screws M4*25mm
2 screws M4*12mm
4 screws M4*20mm
2 screws M3*35mm
18 nuts M4
2 nuts M3
plastic glue
Gearbox working video:
youtube.com/watch?v=iyQjpDEgMG4&t=59s
List of materials:
https://drive.google.com/open?id=1CMsNVwNZF3Aeq_T0mciNcDVr4Tlgpgap
C005 .step File:
drive.google.com/file/d/1J5oOYUreFAx17Mj_7WW7-Me3h-Q0UPJT/view?usp=sharing
C006 .step File:
drive.google.com/file/d/1JRJvSC8GwKYrPfGhQOyvnyUYjJCuQVtW/view?usp=sharing
Motor:
You are prohibited from sharing, sub-licensing, selling, renting, hosting, transferring, or distributing the digital file or 3D printed versions of this object, as well as any other derivative work in either digital or physical form (including remixes).You are not allowed to use the objects in any manner that involves charging money or collecting fees without permission.

