I'm replacing a cap that was lost from one of the ends of my Total Gym. I've linked some pics. I have no problem making the cap itself but the ridges around the outside I'm not sure how to easily create without just using a skinny box hole and duplicating and changing the angle about 50 times. Is there an easier way to do this?
Here is the cap I would like to model https://imgur.com/a/kZtu0zr