Slot cutting outside edge of a circle
I'm very new to routing, so if there's an easier way to do this, even without a router, please let me know.
I want to cut a slot into the edge of a few different sized circles, one size being 6" in diameter and the others smaller.
What would be the best way to do this? I don't have a router table but if one would make it easier, I'll build one.
I'm trying to make the edge of a bobbin that will be used on a large spinning wheel (for wool, not a random wheel that spins).