Our playground set is super old and there's no parts being sold.

So, I measured the original old one and modified a bit to fit to the pole.

I also put the original design as well.

I used Overture ASA and it took 10 hours to print.

Stool is fixed with ¼"-20 1" machine screw to the pole with ¼" hold flat washer.

There's ¼" hole with  0.28" long steel barrel at the axis to make it rotate while note scraping off the contact point in the original product.

I resued that part to assemble.