I checked out quite a bit of swing sets and most of them used metal connection methods and I just didn’t think these connections will stay tight over a period of time:
I found 2 corner bracing designs using modified wood pieces and settled on my current choice (image on the right). The other one was built like a tank but it also looked too bulky with 6 x 6s which is way too heavy for one person to lift and fit:
Wanted to see what kind and sizes of wood needs to be used to make a DIY SWING SET