Update. added a version that will print flat for increased strength.
My cat's cat tree was wobbly (because it uses a grub screw), so I made this bracket to strengthen it. Printed 3 at first but I liked the improvement so much, I made 9 more to even further stabilize it and the other post. Abigail approves.
I over designed it so you can add more screws for a fat cat. also, you can print it with sturdier material than what I used, PLA+.
The author marked this model as their own original creation.