Pretty simple build, the main part was 1"x 6" pine, I spent a little extra money on pre-primed board to speed my painting up ( I'm under a tight deadline). Next I added a second 1"x4" board frame on the inside ( I went cheap on that wood, no one will see it). It added stability, and by recessing it created a shelf for the game board to rest on. By the way, if you like making things out of wood, treat yourself to a brad nail gun and a compressor. It'll change your creative life for the better.
After a successful test fit, it was painted a nice aqua green to match the character board, and a color that felt surgical to me.
With the main board completed, it was now time to make it the actual Operation game. It needs holes filled with body parts to remove. This took careful planning. I had one shot at cutting into the pristine finished board. I was going to create a large trace paper cover to layout, sketch, and plot hole patterns on, but lucky for me, the nice guy at Kinko's gave me their first "oops" printing for free. Made life easy, and much more accurate using as a mock up.
Next in Part Three - cutting holes, and making bones and organs.