Those Are all great!

I especially like the ones with the curved pieces - What ARE those curved pieces made of, anyway? big PVC pipe? or cardboard tubes? any idea where to find them? That one looks more 'stable', too - though I don't think I'd make ours three spots deep - I only have one cat and I don't have alot of floor space.

I do think I might do some ramps and shelves on the walls - esp in the computer room - Pixel likes to keep us company while we're online - and he loves his spots on top of the tall file cabinets - it just that he has to jump on the desks (and everything on them!)to get there!

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If your floor slants, depending on how MUCH it slants, you could always get rubber-tipped screw-in feet for the base (like on a washing machine - they're called 'leveling feet'. But they would probably adjust only a few inches. If you use the leveling feet, you would be able to move the tree around the house if needed.
(for example, you could have the 'low' floor side at 1 1/2" and the 'high' floor side at 1/2" which would make the base level)

I would think you would need the base to be pretty wide - Depending on how tall the 'tree' is. the taller the tree, the wider the base. (think of a Christmas tree stand - the wider bases are more stable) however, the taller the 'feet' (under the base plate)the tippier the tree would be, too.

Looking at the base on Christa's tree - I'd guess that you should have about 2' square of base for every 4' of post? so a 6' tree should have a 3' (36") square or circular base?

if you're afraid of tipping, more supports would make it more stable, and then it wouldn't matter much if it were 'level' - esp if you used those curved things or a platform with sides - the cat probably doesn't care, as long as they don't fall off when they fall asleep! LOL!


thanks everyone!

Laura