Cat Tree How-To
1. Use a tree saw to cut the trunk of a sturdy piece of branched wood so that it forms a flat surface.
2. On a 1 1/2-inch-thick piece of wood that is wide enough to provide a stable base (this one is about 15 inches across), draw intersecting lines. On the base, mark trunk's footprint at approximate center. Mark placement of four 3-inch wood screws, as shown.
3. Drill pieces together.
4. Remove bark from the base if desired.