Miter shooting board
A miter shooting board is a woodworking tool used to precisely trim and refine miter joints. It allows for accurate and controlled planing of mitered edges.
I designed this in Fusion360 and printed it on my Prusa XL, instead of building it with wood, since I wanted it to be and stay accurate. I am really happy with how that worked out. The edge of the fence is replacable, later I glued on a cleat.
Please be aware that it is rather big, and optimized for my block plane. You‘ll need a printer capable of printing up to 360mm length. And you should doublecheck, that your block plane is as wide as mine: 36mm. If you want to adapt this to your needs, I also added the Fusion360 file.