The raw tube pre-carpetinization.
This was quite satisfying.
It's amazing how that rough edge disappears.
The small octagonal platform is for attacking the the king/queen of the tower. The highest platform is thinner in hopes that a cat might dangle their legs to either side once big enough.
It didn't add steps or platforms through this 4 foot tube, because I know cats will want to rip up through it. That and the fear of looking down inside.
Plenty of places to relax.
The entire Kondo weighs around 100 lbs, specifically built for monkeys (insane cats).
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The Kondo

Specifically designed for 'wild' cats, who love to play. This very heavy cat tower was designed to reflect the price of the junk found in stores.

John Gates
Industrial Designer Lawrence, KS