Cylinder with Cone Shaped Divets

thingiverse

I was playing around with the revolve feature in 123D Design, and what I came up with is a shape that's completely empty inside. If you've got a more catchy name for this kind of thing, feel free to share it. How I Made This Shape I started by sketching out a triangle on my computer using 123D Design. From there, I used the revolve tool to turn my two-dimensional drawing into a three-dimensional object that's totally hollow.