Dug all the holes for the 12 sided cobbin, rented a groundhog, $100 for four hours. Was able to dig all the holes in about a half an hour 💪. I’ve got another gazebo project. I’m working on, with 8 x 8 posts, so needed a 12 inch diameter hole for that, so I just used the same auger bit for the cobbin, the holes are definitely wider than needed, oh well.
what is the exact distance you recommend for the 12 sided from center point to inside post?