Drill a 5/8 hole and pop it in, should be good to go. Inspired by something I saw in a youtube how to. If I find it I will post it here :)
I found that printing them with it upside down so the brim is on the bed works best. I will try to get it oriented correctly in v7.
I have found nylon to be pretty nice as it gives a bit, but if you live in a humid area they will swell so you might have to oversize them. Also a soft PLA works well. I used Amazon basic PLA because that is what I had left for my first print and they are still working.
Amazon Basics PLA
Just up perimeters and top/bottom layers so it is solid.