I drilled two holes at the ends of the post. Tied a knot in the top end, wound my way down, then ended with a clove hitch to maintain three tension, and put the excess through the other hole and tied another knot just for extra security

The other one I made has lasted more than a year, and that was not made as well as this one. I’m planning on chopping this one up and tossing it whenever it gets worn out

I’d recommend using something like 3/8 ply, instead of the 3/4 I used, you’ll save a ton of weight. For joining vertical and horizontal surfaces I used a few, small L-brackets and a couple blocks that doubled as reinforcement

I use staples, too. I use them for the primary attachment of carpet, while the adhesive cures. Clamps, too, depending on how aesthetically pleasing the surface needs to be

I didn’t really plan it, so sequencing building the frame vs attaching the carpet was a little annoying, but overall not bad at all.

This isn’t the first one I’ve made for them, but I used spray adhesive on the first, which wasn’t nearly effective enough. This time I used carpet adhesive, which was more cost effective and seems to be much more effective. Downside to that, though is that I had to wait 24 hours after carpeting a piece to attach it

FWIW I just downloaded it for free