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Adding Protrusions to inner curved face.

So I want to add 6 equally spaced protrusions to the curved inner face of the object. But I really don't even know where to begin. If anyone could point me in the right direction that would be appreciated.
Best Answer
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MDesign Member Posts: 704 ✭✭✭
Without seeing what the protrusion is supposed to look like, it leaves a lot to the imagination. you can sketch on any plane and extrude to curve surface or project a sketch to the curve surface, split, and move face/extrude. Or a number of other ways probably. Have a look at learn.onshape.com for developing more fundamental skills to help going forward.
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Answers
Circular Pattern is the tool to use. The tool is available while in a sketch or later selecting a feature, part, or face. - Scotty
As Scotty said….create your protrusion however you like, then circular pattern it.
Sorry I should have been more clear in original question. I'm unsure of the best way to start sketching the protrusion since I can not start a sketch on the curved surface. I understand that once I have the object sketched in the location I want, I can then use circular pattern to replicate it around the inner surface.
Without seeing what the protrusion is supposed to look like, it leaves a lot to the imagination. you can sketch on any plane and extrude to curve surface or project a sketch to the curve surface, split, and move face/extrude. Or a number of other ways probably. Have a look at learn.onshape.com for developing more fundamental skills to help going forward.
Fair. I ended up using plane referenced from the center to get my starting point, then exclude to face and circular pattern. Is there another way to do it? Thanks for your help and patience.