Rotary to linear drive

thingiverse

This is an updated revision of Models 614962 and 652717. The geometry has been revised for a truly linear output, and key anchors have been enlarged for greater resilience. A full set of STL files are available here. This model is based on mechanism 329 from 507movements.com. Designed in Moi, it was manufactured using PLA filament on an Ultimaker 1 printer. An animation created with Blender is available at https://youtu.be/T4Nh_J__8oU and a video of the printed model is viewable at https://youtu.be/Cy_rkiBq3vw, featuring its remarkable flexing properties. Print Settings Rafts: No None Supports: Yes Resolution: 0.2 mm layers Infill: 40% Notes: Please check orientation before printing. I utilized PLA and advise using it over ABS for this project. I recommend setting the wall thickness to 1.2mm and the infill to 40%. For larger prints, I used a brim attachment. Support material was applied solely to the smaller gear due to its unique requirements. This design decision led to an improvement in linearity, however, at the expense of print complexity. In revising the model, I opted for a more robust approach rather than compromising on the gear's geometry, as observed during the animation process. Hence, this revised design was implemented. Post-Printing Holes are commonly designed to allow components to rotate smoothly and align precisely with specific dimensions such as 6mm diameter or 8mm diameter. Incorporating a margin of around 0.3mm below or 0.4mm under nominal for male parts ensures accurate fits after reaming to size with manual hand reamers following the printing process.