Introduction: Ikea Built My Cat Scratcher

I always thought those cardboard cat scratchers were a stupid idea, until one time when we were moving and there was a stack of boxes, and the cat could NOT leave it alone. Well. She left it alone for a bit after pulling the whole stack down onto the floor with a crash. But she was right back at it in no time.

But it seems lame to spend money on cardboard, something thrown away so often and in such quantity it gets its own dumpsters. Seriously? We're basically talking about buying trash for the cat to play on!

But cats love it! But it's just cardboard! And I'm cheap! But... think of the cat!

Psychologists say it's not good to live with this kind of internal conflict.

Much of my current furniture came from Ikea, and everything comes from Ikea in cardboard. Even my change and receipt were in a cardboard flat-pack last time I went there. My place was filled with new furniture I didn't want scratched on, and cardboard. The light bulb went on.

This project is quite similar to Neopirater's, with two notable exceptions.

1) No glue on mine. It's all held together with magnets*.

2) My cat is much, MUCH wider than Neopirater's cats. It's even possible my cat is as wide as any two of Neopirater's cats. As a result, although I don't think my scratcher is much smaller, it will look much smaller in the final photo.
2a) She's not fat. She's just wide. I swear!

  • That was a joke. I mean, there's really no glue. But there are also no magnets.

Step 1: What You Need

WARNING: It's *highly* recommended to read the instructions all the way through before beginning this project, because there are option steps, and because some of it will make more sense if you know what comes next.

MATERIALS & TOOLS

Cardboard from Ikea (This is an Ikea hack, after all!)
--- One long skinny box a bit bigger than a cat (Here, I've used the one the HELMER drawer unit comes in.)
--- The outer flat packing boxes of larger furniture (I used the VIKA Blecket box & inserts.)

Utility Knife
--- Must be sharp! Otherwise the cardboard just shreds, and your cat eats the shreds and craps cardboard bits for a week, instead of getting a new scratcher.
--- Adjustable depth of blade helps, you will NOT be cutting all the way through the cardboard.

Straight Edge, 1-2" wide, as long as your skinny box is long
--- Preferably metal
--- Need not be an actual ruler, as there is no actual measuring involved here.

Packing Tape
--- Duct tape is an acceptable substitute, as is strapping tape. The point is, you're going to be putting a little tension on this tape, and don't want it to break.

Although you don't need a cat to make this scratcher, it seems wise to have a cat somewhere in your life. I mean, if you don't even know a cat, you should probably go make something else. Maybe a nice trivet, if you're thinking about things you can put under other things.

Step 2: Setting Up Shop

Be sure your long, flat box is the right dimensions for your cat. Ideally, it's about as long as your cat is from nose to tail tip, and about twice as wide as your cat, and about as deep as your straight edge is wide... If the old wives are to be believed, your cat is approximately as wide as its whiskers. Even if it spreads out like a hot breakfast when it's sitting down.

If your base box is a little too big, you can cut it down, just make a straight cut all the way down the long way, bring the two halves together by the right amount, and run a strip of tape down the seam on the outside of the box. It's not load-bearing tape, but it will prevent the box halves from popping apart during the final step.

If your base box is too small... find another box. Or make a base out of yet another of those many pieces of cardboard hanging around.

!! DO NOT ATTEMPT TO ADJUST THE SIZE OF YOUR CAT !!

Take a good look at your big sheets of cardboard, and figure out which way the grain goes. Look at the sides... two sides will have triangles, and two sides will not. You want to position the cardboard with the triangle sides left and right, and the sides without triangles at top and bottom. When you are cutting, you want to cut across the triangles as you pull your blade toward you. If you cut with the grain, it's not as fun to scratch on (or so I'm told).

Step 3: The First Cut

Line up the straight edge with the left or right side of the cardboard.

(Put the straight edge on the left if you're right handed, put it on the right if you're left handed. Hmm. If you don't know how to use a straight edge, you're probably not OK to use a utility knife. Maybe you should do some other project?)

Holding the straight edge firmly in place with one hand, cut down the length of the cardboard with the blade in your other hand.

Cardboard has (normally) 3 layers - a flat sheet, a corrugated layer (the triangles we talked about), and then another flat sheet. It's OK to use double or triple wall corrugated cardboard, you just have to cut a lot deeper, and still take care not to cut through the bottom-most flat layer. The total number of cuts you have to make can be divided by the number of layers your cardboard has.

You want to cut through the top sheet and at least half way through the corrugated layer, but NOT through the other flat sheet. You need that to hold the whole thing together.

Step 4: All the Rest of the Cuts

Now flip the whole sheet of cardboard over. Take the straight edge and knife off it first, unless you're into minor catastrophes.

You just made a cut in the other side. That makes a kind of flap. Bend that flap upward, so all the long flat of your cardboard is still on the table, but there's a flap as wide as your straight edge sticking up in the air. Place your straight edge against the bit that's sticking up.

Holding the straight edge firmly in place with one hand, cut down the length of the cardboard with the blade in your other hand.

From here on out, it's lather/rinse/repeat: Flip the sheet over, bend the flap, line up the straight edge, make the cut. Keep doing this until you get to the far edge of the sheet. (Definitely stop when you are out of cardboard!) It doesn't really matter if your last flap is a little short or long. Unless you're OCD.

It is probably easier and slightly faster to cut all the way through and glue the strips together, but I've never been good with waiting for glue to dry, and my cat has pica, which means she'll eat just about anything. She has a preference for plastics, and she'd be very likely to eat even a tiny bit of glue sticking out somewhere.

Step 5: Optional: Mod for Vertical Installation

Additional Materials:
- Hook & loop straps
- Butter knife

Find some hook & loop straps, like the kind used to bundle electronic cables together. These are available cheaply from most hardware and office supply stores. If you want to pay more, but maybe get more options, or possibly better hook & loop material, or are too precious to go to an actual hardware store, go to a sewing supply or a store with a sewing section, and buy the necessary amount. Velcro is a trade name, and will likely cost at least 30% more than any other kind of hook & loop product.

The necessary amount is 2 strips five times the width of your table leg. This will give you sufficient overlap to make mounting the scratcher vertically fairly secure. By 'strip' I mean a PAIRED strip--you need the hook & the loop side, or it won't hook. The scratcher will just fall on the floor and you'll feel like a jerk. And your cat will laugh at you.

Use your utility knife to cut 2 pairs of slots in the base box of your scratcher. You want them to be equidistant from the long-way center line, and about a hand-width from the ends of the box. If your hands are unusually wide or narrow, please have an adult with normal size hands help you with this part.

The space between the 2 slots in each pair should be the width of your table leg (or whatever you're attaching the scratcher to). Each slot should be the same length as your hook & loop material is wide.

Use the Ikea SVIT butter knife to push the straps through the slots, taking care that the overlapping, hook-able part is outside the box. If you care about the finish of your table leg, you'll want to see which way the hook part of the hook & loop is pointed, and adjust so it's not going to come in contact with the finish.

If you use any other butter knife, the project will explode, voiding your insurance and disappointing your cat.

Step 6: Assembly

Take all your folded up cardboard accordions and stuff them into your flat box. It should be kind of a snug fit, but you don't want to burst the box. If it's very loose, go back to Step 4 and cut more accordion. Or cut the box down.

Run a strip of packing tape twice around the outside of the flat box, taking care to pinch the corners in a little bit. This will lock interior cardboard in place.

You're done now, put the thing on the floor and bask in the reflected glow of a very happy cat.

If you added the optional vertical mounting straps in Step 5, now's the time to strap it to your table leg or whatever. If your cat doesn't care for the vertical position, you'll still be able to lay it flat on the floor. And if you *didn't* do that bit, and your cat would prefer a vertical scratch, just cut the tape, pull the cardboard accordion out, put mounting straps in, and then re-do the final assembly.

Feel free to add catnip to the scratcher to entice your kitty. Many cats seem to intuit the proper usage in no time at all.

Step 7: If...

If this is your cat's first cardboard scratcher, put it near where she likes to sleep, and occasionally place the cat on the scratcher just as she's waking up. Cats like to stretch and scratch right at waking, and it doesn't take them long to learn that the cardboard "tree bark" is the ideal place to do that. Our cat naps right on the thing to save time commuting. We've found scooping the cat up out of her nap, and pouring her onto the scratcher (front feet first) seems to give her a pre-stretch that leads to scratching every time.

If the cat really, truly does not seem to know what to do with it, scratch on it with your own fingernails while he watches. The motion and sound are both useful because cats learn easily by imitating us. You can also gently rub his front paws on it, to further provide the idea. Try not to freak him out, or he'll never go near the thing again.

Most adult cats won't actually climb the thing, since it is only about as long as their body, but it's better if it's not attached to something unstable or very light. For instance, a mop handle is a poor choice. You can also just lean it up against things (walls, the end of the couch where she used to scratch...). Our cat learned the exact technique for getting better scratch without knocking the thing down.

If the top surface of the scratcher gets all used up and ratty looking, just cut the tape, flip the accordion over, and re-tape it.

If your cat dispenses bodily substances onto it or something spills on it, or it gets rained on, remember that cardboard is absorbent, not washable, and free. Cats who get a lot of hairballs like to stand on the scratcher to vomit, because it gives good traction, but usually they puke over the side.

If your cat is a sheep, like our cat, you may want to get the shed hairs off it with the cat's brush, or even vacuum it occasionally. This will be somewhat traumatic to the cat if he is on it at the time.

Comments

author
FossaFossana (author)2012-09-19

Does anyone know how to make tower-shaped cardboard cat scratching posts/climbers? Or those sculpted-looking curvy "furniture" scratchers/loungers made of corrugated cardboard?? I run a small (+/- 30 cats) cat rescue home and would love to give the cats some of the new corrugated cardboard "furniture" but who can afford it?! It costs a fortune! And it's only made of stupid cardboard! Why can't I make it myself?! Anyone help, please?

author
grannyjones (author)2012-06-04

long, skinny carpet scraps can usually be picked up free the night before trash day behind the high-turnover apartments.

author
Furballs (author)2012-02-06

Best laugh I've had in ages.. thanks !! Good idea too.. though my two kitty overlords have decreed that cardboard is for lower life forms only.. ONLY carpet or sisal meets their criteria. Catnip is no help, they're both immune, darn it. I keep their claws trimmed short so their scratchy mats and posts last a fairly long time, as they don't have razor sharp claw tips to mangle them with.

author
tbeatty (author)2010-04-05

thanks for the laugh on the hairball comment. =)

We will be moving in about 10 days, and I have a ton of boxes. I am looking at what I can do with them besides throw them out after we are done unpacking.  With 2 kitties, this should work nicely. Add in some nip, and they will be very happy.  

author
nix78 (author)2010-03-15

Just to complicate things, Ikea did sell ready-made cardboard cat scratchers for real, but hey did not pack in the usual cardboard box. (Our cats did not like the novel idea however. They still prefer the carpets and the furniture to the scratchers. :( )
Hmm, if I were a manufacturer who uses corrugated cardboard to pack things, I would print these instructions on the boxes. :)

author
deofthedead (author)2009-08-23

sfasdgfbbg. God, I laughed so hard I started coughing. I hope you're happy! XD In all actuality, this is awesome. Our precious little girl loves to scratch, tears scratchers up in only a day or two, it's amazing if it lasts a week... And considering we just moved, I think I'll add this to my mounting list of things to do with our overabundance of cardboard... *peers around her apartment* x.x Thank you!

author
Sandisk1duo (author)2009-02-06

vacuum it occasionally

The cat or the box?

author
HvW (author)Sandisk1duo2009-02-06

Whatever your cat will put up with, I suppose. If you can get away with vacuuming the cat, you could probably save a lot of time on other housecleaning...

author
Sandisk1duo (author)HvW2009-02-07

cats don't like vacuums that much...

author
mbear (author)Sandisk1duo2009-08-06

That's why you need a vacuum with a hose attachment. Just put the vacuum farther away from the cat so the noise doesn't bother it as much.

author

My cat wont move out from in front of the vacuum when I'm cleaning TILL I vacuum her!

author
bounty1012 (author)Sandisk1duo2009-02-06

LOL

author
lflythe (author)2009-02-13

Loved the laugh. However, I've purchased one of "those cardboard scrachers" and my cats didn't like them, even with cat nip! But they do like the carpet one! Go figure!

author
c.d.boe (author)lflythe2009-07-29

try some honeysuckle spray. One of my cats doesn't like catnip but they both go nuts for honeysuckle. You can also get old carpet samples from flooring stores for free it you don't want to pay for the carpet scratchers. My cats tear them apart so fast I would spend a fortune replacing them all the time.

author
HvW (author)lflythe2009-02-13

Yeah, some cats don't get into the cardboard thing. Just like some cats don't get into catnip (mine doesn't). The little buggers do take pride in defying expectation... :) Thanks for reading!

author
Claire.S (author)2009-05-29

Excellent instructions and I LOVE your sense of humor .. !!!

author
BonzoGal (author)2009-04-27

Funny and useful and funny.

author
strongtrainer (author)2009-04-10

I work for a nation wide pet supply chain and I use these type scratchers for my 2 kitties. I just moved myself and thought the same thing..."they can't be that hard to make" I'm going to pass this on to the animal rescue groups in the area! PS I always flip the store bought ones before tossing, some people don't.

author
pieridine (author)2009-03-19
I just have to say how perfectly delightful (and utilitarian) your project is... I, too have a "big boned" cat who dearly loves to shred her cardboard scratcher, then go ripping and tearing through the house, and then collapse neatly in a pile and look at me like nothing happened. "Who, me? I did nothing of the sort; how utterly preposterous and undignified..." Never mind that she's just flopped onto "her" beanbag video game chair, which no one else is allowed to use.
author
tswain4 (author)2009-02-24

I got caught web-surfing because I was laughing so hard....

author
gmoon (author)2009-02-05

Is BBF Best Friend Forever, or Big Freaking Fur-ball?

author
necropolian (author)gmoon2009-02-05

it can also mean Big frying Forehead, of Ballistic Flight Fries-receiver, or Bad floody Flies,.... and it is BFF, not BBF.

author
gmoon (author)necropolian2009-02-06

and it is BFF, not BBF

We call that a typo, my friend.

Big frying Forehead, of Ballistic Flight Fries-receiver, or Bad floody Flies

Not of the correct catagory, really.

author
necropolian (author)gmoon2009-02-06

yes it's a CATastrophy.

author
aufachse5 (author)necropolian2009-02-07

Its a CATaclysmic event during a time of CATastrophy, but now the CAT HAS BEEN LET OUT OF THE BAG with this intsructable that was buried in the CATacombs. Now it is the CATS PAJAMAS. it belongs in a CATologue for CATapults and CATaracts It could be in its own section. haha this was meant to be nice so if it comes off as mean, its not supposed to be

author
necropolian (author)aufachse52009-02-07

i understand. this is a friendly, competetive game about writing the most words with cat in them. i like it!

author
aufachse5 (author)necropolian2009-02-07

mine was a stretch in fifth grade, we did this thing in school where we came up with all of thesse words that started with cat it was hard

author
benz_z (author)aufachse52009-02-07

sham wow.....

author
aufachse5 (author)benz_z2009-02-08

i have a shamwow except its generic and expensive so i call it a scamwow my friend and i "accidently" got it for free no we did not steal it it is not stealing if the bank offers to give you money haha

author
benz_z (author)aufachse52009-02-21

i waz watching shun white own the free ride snow boarding comp. at winter x-games 13 and the announcers clearly watch too much late night tv 'cuz thats how they described his 96%(gold medal winning run) but i like "scamwow"

author
aufachse5 (author)benz_z2009-02-22

haha

author
necropolian (author)aufachse52009-02-09

wow, i think you missed this one: "CATdeoxyribonucleic acid" or, in short: cat DNA.

author
aufachse5 (author)necropolian2009-02-10

yes totalyy missed that thanjks

author
HvW (author)necropolian2009-02-05

Hmm, yeah, I think BBF is something else entirely. I did mean Best Friend Forever in this case, that little green toy mouse is the only toy she really loves. It should've been thrown out about 2 years ago.

author
linda1 (author)2009-02-12

This was hilarious... I think it is far cheaper to go and buy a cat scratcher but your lessons were great. Love the cat too!

author
HvW (author)linda12009-02-13

It's only cheaper if you are counting the cost of my furniture... the cardboard came with it for free. It's certainly FASTER and EASIER to buy one.

author
linda1 (author)HvW2009-02-17

I think I was laughing too much to pay attention to what I wrote... I'm pretty sure I meant easier! and faster!

author
HvW (author)linda12009-02-17

:)

author
MasterMediaXD (author)2009-02-17

nice

author
lynks (author)2009-02-16

Cool Scratcher I also use cardboard to make mine but they are a disk on pole design, held together with bolts.

author
savialeigh (author)2009-02-15

Thanks for laughs! Clear, funny, and functional. Tin foil works for some cats, others love it. They do insist on being individual in their tastes... for apholstery lovers, get a piece of ugly (the uglier it is, the tougher it is) and wrap it around a 2x4. staple gun it. The faux-leather-lover wants a 2x4 wrapped with a layer of quilt batting then pleather. If the cat refers the side of the furniture, nail this to the wall. If it prefers the arm/back tops, lay it down.

author
mattias law (author)2009-02-15

great instructable, pictures were really good aswell. did you take a photo and then photoshoped it? my cat is sitting with me while i am reading this she is walking over the keyboard while trying to get my attention

author
static (author)2009-02-14

LOL. I think most figure out. the the commercial items aren't a stupid idea is when the cat starts shredding the house. Your instructable fits the bill for those cat owners who are frugal, tightwads or just plain broke. In that for me cutting cardboard is about as bad as someone dragging their finger nails across a chalk board, I will buy the commercial item if I ever get an indoor cat again. Amusing how nuts they go with batting that ball in a circle.

author
jack ruby (author)2009-02-14

It's a love affair, mainly ikea... and my cat-scratcher
yeah f*** it!

author
bowmaster (author)2009-02-13

My cat could take your cat. My cat is 1.5 times the size of yours.

author
HvW (author)bowmaster2009-02-13

uh...... ?

author
bowmaster (author)HvW2009-02-13

If your cat and my cat got in a fight mine would win. I know you think your cat is big but mine is bigger.

author
HvW (author)bowmaster2009-02-13

Could you get off the internet, please? Us adults want to use it now.

author
gagreenman (author)2009-02-13

My cat isn't too afraid of the vacuum cleaner, as she tends to sit on it and ride while I clean. I'm afraid the results would be much different if I tried to vacuum her though. She loves her cardboard scratcher though.

author
tyalangan (author)2009-02-09

I am literally laughing out loud reading this. You are a hilarious writer! Thanks for the laughs.

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