If you're a beginner at CAD, start with this series of 5 tutorials by CADSessions: Beginner Tutorial 1/5 - Onshape 3D CAD - Creating Sketches and Objects Once you have learned the basics, I recommend ...
We will be using the onshape-to-robot plugin to read robot model from Onshape, and export them to a urdf file. {% content-ref url="ros-2/setting-up-ros-2-humble-hawksbill-on-ubuntu.md" %} ...