I am trying to design a fidget spinner in Rhino Mac, basically following the steps outlined in this video.
I am running into an issue with solids and was hoping someone would guide me how to extrude only the space between the circles. I am also wondering why the full rectangle extrudes and not just the space in between, like in the video. I realize the video is done in a different application.
I considered a boolean difference, but the rectangle is a full solid and I cannot get it to work.
fidget_spinner.3dm (2.5 MB)