How would I draw a circle groove
Yes that’s it
Draw a circle near your object. Revolve it and subtract it. You will get a circle groove.
You could use the revolve tool buy making a sketch, creating a box the size of the circle. Then add a circle the size of the groove. I draw a line down the center as the axis. Go to the revolve tool and select the design and make the revolve.
Thank you very much
Now for your next exercise: Make a cylinder and make a relief groove or circlip groove on the inside of the cylinder.
Think outside the box.