Rotation of a part around the center of mass.

sergei_nesterov

Good day!
There was a need to rotate the part around the center of mass in PartStudio. The 'Transform-Rotate' function requires a specific axis around which I want to rotate. This is logical if I need to rotate around some object, but what if I do this around the center of mass of the part? I do not have suitable axes for this action, I do not want to create additional sketches for this.

This is where the question comes from. In Onshape there is no tool to rotate around the center of mass of the part or use the construction space axes? For example, the 'Translate by XYZ' function can move an object along the axes without specifying a specific line. This means that the object has its own axes

.

_anton

You do still need an axis around which to rotate - at least an origin and a direction. It's easy enough to write a custom feature that makes a mate connector you can use for the rotation: https://cad.onshape.com/documents/9eed5271524e4cce424a0714/w/713c3f6ee70f85948012a403/e/4418f6cd6c8aa9688f983a9b

(Also, note that, in my example, I could've simply put an implicit mate connector - that circle button next to the Axis parameter - on the front face, where it would've computed the centroid of that face.)

ryan_mcgoldrick

How can I import this featurescript? would be handy to keep.

_anton

^ I made a version in that doc, you can add it from there: https://cad.onshape.com/documents/9eed5271524e4cce424a0714/v/4d3e1a1f95f42de4d265b106/e/4418f6cd6c8aa9688f983a9b

Or copypaste into a Feature Studio in a doc you own.