I modeled up the parts of a wall hub that broke on my ground 6x6' ground blind. I thickened the part up slightly to add some strength. Replacement part is $20 online, so if you can print one, save some $$$. Center hole for my blinds is M6 x 1.0 for the threaded stud. Hole is nominal so you will have to either tap it, or drill it out.

Creality

Ender 3

Doesn't Matter

Yes

.2

50% or more