J.C:Try it without gearing

Rotary motion transfer not using gears.

Assembly consists of 13 components created with 3D printing, 11 bolts and 11 M3 nuts.
Parts are designed by the program FreeCad.
1. Base 1 pc
2. Crank 2 pcs
Printed with support
3. CrankBearing 2 pcs
4. PinBearing 2 pcs
For pins It is necessary to remove the strings that extend beyond the cylindrical shape. The Pin should move freely in the bearing opening. See Pic 1.
5. Pivot 1 pc
This component can be printed verticaly or horizontaly. Horizontal printing causes the pivot and arms have printer strings perpendicular to each other and glide better. As with item (4), however, it is necessary to remove the strings that extend beyond the cylindrical cross section.
6. PivotHolder 1 pc
7. Shaft 2 pcs
8. Arm 1 pc
9. Arm1 1 pc