I am working on a kitchen grinder in solidworks.
I modeled the grinder base but how to cut the hole for the knob in the body..?
add a refernce plane with two mates:
first mate: parallel to original plane (zylinder axis)
second mate: tangential to zylinder
(additional: third mate: angle (or parallel) to another plane (or partsurface)
now you can use this plane for your sketch