Summary

https://youtube.com/shorts/wlIdU5LOgd0?feature=share

This is a 3D-printable model of Mechanism 27 from 507 Mechanical Movements. The mechanism features multiple gearing where a smaller triangular wheel drives a larger one using friction rollers in radial grooves.

Printing Instructions:
Orient all parts as shown in the picture for optimal printing results. There are some areas that may need support, like the grooves for the C-clips or the shaft hole on the main wheel, depending on your printer’s ability to print them without support. All parts need to be printed only once, except for the C-clips, which should be printed five times, and the rollers, which should be printed three times.