TrunnionLab, a Browser Workbench for Custom Technic-Style Parts

Field notes

The workspace treats print tolerances as part of the model rather than as a slicer-stage adjustment. Users can print a comparison strip, test genuine pins across successive hole sizes, and feed the result back into the geometry parameters. Export offers both a single boolean-unioned model and separate parts, with the site stating that each part is checked for watertightness before download. Project storage is local to the browser, with JSON export and import available for moving work between machines.