I made a quick and dirty zero clearance plate to cut some small pieces, but realised that I needed to cut a larger piece of MDF while I was working. Ok, I thought, the saw is already set up, it won't take a minute.
Then promptly cut the zero clearance board in half...
I feel like the best wood workers are the ones that know how to do creative problem solving well.
Like, they make just as much mistakes as anyone else, they just know how to solve them better and quicker. I really love video's where the wood worker makes a mistake, admits to it and shows how it is solved. Keith Johnson woodworking is one that comes to mind.
So forget about your silly mistake. Laugh, and think of how you are going to fix it. It is a shop jig, so simply joining it back together in a strong way seems fine to me.
And thanks for the laugh, this would be something I would do too...