This cat tower uses simple construction techniques. It requires only basic hand tools. All the materials can be found at your local hardware store or just scrounged. I'm going to break down the construction of the different parts, and you can feel free to combine them in whatever way works for you (and your cat).
I've included a Sketchup file, which might help clarify the design.
- hand saw (or better)
- measuring tape
- framing/speed square
- razor knife
- staple gun
- 2x4 lumber (approx. 20' for the pictured design)
- 3/4" plywood/particleboard (approx. 18" x 18" and 12" x 18")
- 2.5" wood screws.(a bunch)
- carpeting (several square feet)
- gaffer tape
- Sisal rope
- 2' long 4+" dia. tube OR 4x4" 2' long board
- eye hook
Cut List for 2x4's:
- 4.5' x 2
- 3' x 1
- 2' x 1
- 18" x 4
A Word on Safety
Cats can be very destructive and anything you give them should be built to withstand their rough play. Take care when choosing your materials and construction techniques. Examine your work for sharp edges or other dangers. I attempted to make this tower no more dangerous than a common piece of furniture, but I am no expert. Please take care and use common sense. If you're not sure, ask until you find out!
Humans can be destructive when building, especially with sharp tools. Take care when choosing your construction materials and techniques. Practice proper tool safety, always. Please take care and use common sense. If you're not sure, ask until you find out!
Step 1: Wooden Frame
I planned out the design in SketchUp. The levels are each 18" high. This seemed about right to allow my cat to jump up without difficulty. You'll also want to ensure that each level is adequately supported by the 2x4's.
Take your two 4.5' vertical pieces and lay the horizontal pieces on top, as shown in the first picture above..
Drill one hole at each intersection and secure with a screw.
Use your square to check that everything is...well, square. Tap the boards lightly with a hammer to adjust the angles if need be. Once you're satisfied that everything is squared up, go ahead and add another screw or two to each joint.
Use the same process to add the 2' horizontal piece, then the remaining two horizontal supports, and finally the 3' vertical support. As long as you keep everything square, You can work around any other mistakes.
Secure your levels with a few screws along each side. Since we haven't added the scratching post, the frame may be a bit wobbly at this point.
I used a cedar board at the very top, mainly because I had it to spare. Some cats enjoy scratching the soft wood. If you want to use cedar, make sure your cat isn't allergic.
Step 2: Scratching Post
You're going to need a sturdy core. Bear in mind this post is also acting as one of the main supports. I happened to have a wide, heavy pipe left over from another project. You can use anything that's strong and the right size. A 4x4" board will work well, and your cat won't care that the post is square instead of round.
If you have access to the tubular cardboard cores from shrink-wrap (Used a lot in warehouses), you can join a couple together to use as your core. Take some scrap wood and cut out a few circles slightly larger in diameter than the tubes. Join them together in a stack. Smooth out the edges, then jam it halfway into one tube. The fit should be tight enough that you need to hammer it in. Support the wooden stack from underneath and gently hammer the second tube on. I've found that this will hold very well.
Once you have your core, measure it against the height of your first level and cut a slot about one quarter of the way around. Test the fit, widening the slot until it fits snugly over the carpeting. Secure with a couple of screws.
Take one end of your sisal rope and glue it to the bottom of your core. Wind the sisal up the core, applying a very thin layer of glue as you go. You can add as many layers as you wish. I did three layers, finishing at the top. The key is to keep the wrapping close and tight. Secure the end in a mechanical way, such as tying it around a screw drilled into the core. The starting end should be hidden safely beneath the other layers.
I topped mine off with a plastic end cap, but if you don't have one on hand, you can finish off the top with a circle of wood, or a scrap of carpet or fabric.
Step 3: Carpeted Levels
Simply measure your carpet to size and add about 1.5" to the sides that will fold under. A good razor knife should cut through it with ease.
Secure along the edges with a staple gun. Apply staples generously, parallel to the edge. Make sure your staples aren't so long that they go right through the top of the board.
To avoid fraying, cover the edges with gaffer tape. I prefer gaffer tape because it stays in place, but doesn't get all gummy over time like duct tape does.
The advantage to carpeting your levels this way, as opposed to using glue, is that you can replace the carpet fairly easily. If kitty makes a mess, you can always rip off the tape and pull out the staples.
Step 4: Hanging Toy
Step 5: Curiosity Honeycomb
This one was really simple. I glued some toilet paper tubes together. You can either glue or staple the whole structure to your cat tower.
Unfortunately, this was a late addition to the tower and doesn't appear in all the photos.
Step 6: Finishing Touches
If you have hard-surfaced floors, put something underneath your frame to prevent scuffs. Scraps of carpeting work well. For shock absorption and grip, though, I'm considering hockey pucks.
If you have concerns about stability, you can attach the whole tower to a wide base made out of plywood or the like. Another option is to anchor the tower to a wall. a couple of screws drilled straight through the vertical supports and into a wall stud will do nicely.
I hope this instructable gave you some inspiration and useful tips. Please have fun, be safe, and cast your vote in the Pet Contest!