Nice! I bought a small square to check my blades. It wasn't square,, the square, not the blade. I guess you get what you pay for.
I'm going to take your post as an open invitation to post my own jigs! LOL
I have about 4 or 5 jigs just for making my Adirondack style rocking chairs. I thought that I invented this first one, but turns out I didn't. In my head, I'm still gonna say that I invented it! I call it the Bow Jig. I use it to make the curve at the top of the back slats on the chairs. It is adjustable for different sizes of "arches". I cannot find a picture of it but I'll include a pic of the back slats. I also made my own tapering jig which is also used on the back slats. I think I have 2 other jigs just for making the chairs also.