We recently took in a stray kitten and to save our furniture we decided he needed his own to climb on. After looking online and in stores, we decided we could make one for a bit less money. As a fan of Instructables, I searched the site, but didn't find anything like what we were looking for. A search found some sites selling plans, but we reverse engineered some pictures and designed a plan of our own for a carpeted, four-level cat tree (five if you count the base level). We went to the hardware store (we have a Home Depot right down the street) and purchased lumber, carpet, sisal rope, a hook for hanging a toy on a string, and some spray cans of adhesive. We were unable to find dowel screws, so a trip to another hardware store, Menard's, netted us some more (and cheaper) rope and some dowel screws to connects the pole sections together. We already had the wood screws for attaching the poles to the base and the top, but those can be purchased as well. Our total was a little more than $100.
Step 1: Materials & Tools
1 - 4ft x 8ft x 3/4" Particle board for the base and two rectangular levels
1 - 2ft x 4 ft x 1/4" MDF board for the triangular levels
4 - 2" x 2" x 8ft boards for the posts
3 - 50ft of 1/4" - 3/8" Sisal rope to wrap around some of the posts
1 - 3ft x 12ft piece of carpet
2 - cans of spray adhesive for gluing carpet platforms and poles
9 - 2" or 2 1/2" long dowel screws (the 2" long ones were labeled hanger bolts, and we only got them because the store didn't have enough of the longer, dowel screws)
18 - 2" wood screws
Electric drill & drill bits
We had the lumber cut into the following sizes by the staff at the store for free to make it easier to transport home:
Particle board cut into 30" x 4ft sections, with a little left over
MDF board cut into a 18" x 24" section with some left over
The 2x2's cut in half, to make 8 - 4ft boards.