

Looking for ways to make a large cylinder cat tree
Id like to build a version of this cat tower/tube. So far, only suggestion is a quick Crete pillar form, which seems to be made of a heavier duty cardboard. 12” with is the largest size i can find. Seems like 16” is the largest made, but every source ive found online does not have them in stock.
My next best idea is to cut down an old pine tree and hollow it out.
But seriously, my actual solution is to roll a tube from a tv box i got, ducttape it and add maybe some doubled up cardboard rings inside for reinforcing. Any ideas, id appreciate. Thank you.
(Edit)
Well, this seems to be more trouble than its worth to build. Thanks for the ideas. Im going to keep it simpler and have exposed platforms in a post.