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Cardboard Cat House

posted in Family & Kids > Pets
03/17/2015
  • The whole cat bed is made out of cardboard layers, one above the other. Unfortunately I don't have a laser cutter so I had to cut all of those pieces using a cutter by hand.
    Am I crazy? Probably yes.
    It's been a long and hard work, but I can assure you that it was worth everything. And you know what? The excitement I had while cutting all those pieces made the whole process so much fun!

  • Step 1: What you need

    A LOT of corrugated cardboard - I used the one with 2 layers, it's about 6mm thick (0.23 inches)
    cutter
    pencil
    compass (you may need the extension that makes it longer too)
    ruler
    white glue
    paint brush

  • Step 2:
    Draw the circles
    This cat bed is a composition of many cardboard discs one above the other.
    The first thing you need to do is drawing these discs.
    I made 8 groups of discs that have 4 or 5 discs in each. The biggest ones have 5, the smallest ones can have 4 instead. This is not so important so it is up to you. If you make 5 in the smallest groups too, the smallest circle will turn out too small and that will just make your cat bed's tip taller.

  • Each group consists of a big circle and other smaller circles in it.
    Here is the list of the radius measures for the main circle (the biggest one) in each group:
    21,5 cm (8.46 inches)
    21 cm (8.26 inches)
    20,5 cm (8.07 inches)
    20 cm (7.87 inches)
    19,5 cm (7.67 inches)
    19 cm (7.48 inches)
    18,5 cm (7.28 inches)
    18 cm (7.08 inches)

    As you can see, each of them is 5mm (0.19 inches) smaller than the previous one.

  • Once you have drawn each of those discs, use a ruler to measure 4cm (1.57 inches) from the circumference.
    Open your compass from the centre of the disc to the new measure and draw a smaller disc.
    This way you have a round strip that is 4cm thick.
    Again, measure 4cm from the new circle, and starting from the centre draw another smaller circle.
    Continue this way until you have 5 discs one in the other. Like I said before, the last groups will probably have 4 discs instead of 5 because the last one will turn out way too small.

  • Step 3: Cut the discs
    It's time to cut each disc with a cutter now.
    I recommend you to write a number on each disc before cutting them, so that you can always know what group they are from. Like I wrote in the previous step, I gave number 1 to the biggest group of discs, then 2, 3, 4, 5, 6, 7 and finally 8 to the smallest group.

    You need to be extremely accurate while cutting these discs because the final result depends on this step.
    Cutting such round shapes by hand is really complicated so please take your time.
    It takes time, patience and strength, but if I did it, you can do it too!

  • Step 4: A few more discs
    Did you think you were done cutting?
    I'm sorry, you are not! There are some more pieces you need to cut...

    First of all the base: it's a big disc with a radius of 21,5 cm (8.46 inches) without any other disc in the middle. This way it doesn't have any hole.

    Now draw other 6 discs that are as big as the base.
    Measure 4cm (1.57 inches) from the circumference and draw a smaller disc. This is just like what you did in step 2 but you don't have to draw anymore smaller discs. Just one.
    Cut each of them.

  • This way you obtain 6 round discs that are as big as the biggest disc in the first group.

    Note: As you can see from my photos, I made only 2 at first, but later I decided to add more because the more they are, the thicker the base will be. This way the cat bed is larger on the base.
    You can make more than 6 if you want - I actually recommend you to do that if your cat is pretty big.

    Let's try to compose the base now: place all of these new round strips on the base disc, and add the biggest disc from group 1 on top.

  • Step 5: Put the pieces together
    All the pieces are cut so let's try to compose the whole cat bed.

    The biggest disc from group 1 has already been placed in the previous step, so let's add the biggest disc from group 2 on it now.
    Try to center it as much as possible so that there is a 5mm (0.19 inches) thick border all around.
    Now add the big disc from group 3 on top, then the ones from groups 4, 5, 6, 7 and 8. Make sure to always center them so that there are 5mm all around.
    After the biggest disc from group 8, start again from number 1. You must place the second biggest discs this time.

  • When you are done, start again from number 1 and continue this way until all of your discs are on top of the bed.
    You'll see them going from the biggest one on the base to the smallest ones on top.

    You've just created a round pyramid!

  • Step 6: Draw the door
    You need to decide where the door will be now.

    I wanted to leave the base free from having the door so I removed it from the bottom.
    I then counted 20 layers of cardboard discs and removed the remaining ones at the top.
    Don't worry, this is just temporary.

    The 20 discs I counted are the ones that will be cut to create the door.
    If you want to make the door taller you need to consider more than 20 discs

  • Now use a pencil to make signs on the discs to draw the door. You can make it whatever shape you like.
    You can align the discs on one side to be able to draw better lines on them. Doing that helped me being more accurate in drawing the door.
    IMPORTANT: Make sure that each disc layer has door signs on them otherwise you won't know how to cut some of them.

  • Step 7: Cut the door parts
    This was the hardest step for me but I finally did it.

    You need to start from the signs you drew on the previous step and draw straight lines that will divide the disc strip in 2, cutting out the door part.
    My problem was figuring out the angle that those lines had. I mean, I knew where the lines had to begin, but I didn't know where to end them.
    Finally, I came up with the idea of drawing those lines as if they were starting from the centre of the disc.

  • Unfortunately the middle points of my discs weren't there anymore so I had to try to make them as precise as possible, even thought I wasn't sure about them.
    You can see the "technique" I used in the pictures.

    When you are done drawing them, cut the door parts out.

  • Step 8: Try the composition...again!
    It's time to see if the door parts you cut turned out right in the composition.
    So, again, place one piece on the other to rebuild your cat bed.

    I was really anxious this time because I was afraid that the door parts I cut were totally wrong...but luckily, they worked fine! Ok, not REALLY fine, a couple of pieces weren't exactly right, but I was very satisfied with the result!

  • Step 9: Glue the pieces
    If everything looks good and is done, it's time to glue all the pieces to make sure that they don't move anymore :D

    I mixed some white glue with a little bit of water and spread it on each piece using a paint brush.
    I glued all of my pieces this way, one by one, making sure to center them as best as I could.
    I recommend you to press them from time to time to be sure that the cardboard pieces stick together.
    I finally spread some more glue on the whole surface.

    The cat bed is done! You just need to wait for the glue to dry completely.

  • Thanks for looking!

    This is not my idea! I merely loved it and am sharing it.
    Please see the original post and many other great ideas at the link provided below:

    http://www.instructables.com/id/Cardboard-Cat-Bed/

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