Looking for some input on how I might fixture this part for the second op on the back side. I would like to machine one surface then turn over and face off, then fixture to finish.

I have made a lot of similar parts machining both sides, then machining the part "out of" the stock. However this method leaves a little "hook" than needs cleaned up by hand, plus the machining is never as clean as I would like. This way ends up leaving chatter marks on the part in the area leading up to the part coming loose from the stock.

I've never worked in a machine shop so I haven't seen any cleaver fixturing ideas or systems, I'm just winging it.

Any ideas?

Part is about 1.25" tall.