I've built several cat trees and scratchers for our cats over the years, but despite my best efforts, they're always undersized for dusty.
So I put this together yesterday with crap I had in the garage. Honestly, given it was ~3 hours of work, I'm very very pleased with it.
The post has four screws through the base and two L-brackets. The carpet is attached with teeny 1" nails and was a pain in the ASS to attach to the circular base.
I'm most proud of the rope attachment points. I drilled a hole just big enough for the rope to pass through, then put a big brass wood screw next to it in the hole and drove it in. So the thinking is that, to restring it, it'll just be removing two screws.
