What bit would I use to make this cutout
I just got my first router (the Bosch 2 1/2 HP Kit) and I need to make a ledger block with a 1/2" hole in it 4 1/8" in diameter. Can anyone here suggest a bit that I could use? I assume I will use my plunge base to make this cutout. Sorry for my lack of knowledge, I have been reading this forum for a while but I finally got my first router. I can hopefully purchase the bit required and start my project.
I was thinking about using a 4" hole saw to create the outline of the circle but I suspect there is a way to do this with a router.
I have included a drawing of what I hope to achieve.
Thanks in advance.