STEP 1: I SKETCHED OUT MY BASIC CONCEPT FIRST (WHAT I WANTED IT TO LOOK LIKE, DIMENSIONS, ETC.)

STEP 2: STARTING WITH THE BASE AND WORKING YOUR WAY UP, CUT EACH PIECE OUT.

Supplies

SUPPLIES: 1/2" SCRAP PLYWOOD, 3" PVC PIPE (OR CLOSE TO THAT), LEFTOVER SCRAPS OF CARPET, PNEUMATIC OR MANUAL INDUSTRIAL STAPLER, SISAL ROPE.

Step 1: Carpeting

STEP 3: CUT AND PUT CARPET ONTO PLATFORMS USING HEAVY DUTY STAPLES (MAKE SURE THEY SECURE DOWN FIRMLY AND DEEP SO NOT WHERE THE CAT CAN SCRATCH THEM UP).

Step 2: Posts and Rope

STEP 4: AS YOU GO, SECURE THE PVC PIPE TO THE PLATFORM WITH SCREWS. TO DO THIS, I CUT WOOD CIRCLES TO THE INSIDE DIAMETER OF THE PIPE AND THEN GLUED THEM IN WITH A GOOD GLUE LIKE GORILLA GLUE. YOU NEED THIS WOOD INSERT FOR THE SCREW TO GRAB ONTO FROM UNDERNEATH.
STEP 5: TRIM THE CARPET EDGES AND CORNERS SO NEAT. STEP 6: WRAP SISAL ROPE (I USED 3/8", BUT YOU CAN USE 1/4" OR 1/2" ALSO). STAPLE THE END DOWN FIRMLY, THEN WRAP IT UP THE PIPE TIGHTLY AS YOU GO, THEN STAPLE THE TOP AND CUT. I PUT HOT GLUE ON THE ENDS TO PREVENT THEM FRAYING, AS A TIP.