Grow a square watermelon by watermelon
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This is really, really easy to do. (Note: you may be able to use this technique to grow other stuff in the form of a square ( actually in the form of a cube) and apply the general idea to other shapes.)

 
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Step 1: Materials and tools

case2.jpg
You need 6, 8" square, 3/8" thick (or thicker) sheets of polycarbonate plastic. (Lexan)

You will need 4 gate hinges and 2 hinged clasps with flat head machine screws and hex nuts plus at least 8 or more 1" to 1-1/2" long, thin wood screws and possibly a 36" length of angle iron or aluminum angle (cut to 8" lengths to yield four pieces) if you have thinner polycarbonate, a power drill and hole saw, and a hand saw or power saw such as a jig saw.

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ant not aunt says: Aug 4, 2012. 4:39 PM
i bet you don't need all the hardware. you can probably use big rubber bands to hold the form in place.
kcls says: Jun 9, 2010. 2:10 PM
I can see it now- instead of a watermelon, grow a pumpkin in a cube shape. Then, carve a Domo-Kun face on it. Voila! Domo-Kun Jack-O-Lantern.


I've got dibs on the 'ible.
omnibot says: Jun 9, 2010. 2:16 PM
Do it!
kcls says: Jun 9, 2010. 2:22 PM
Gotta wait until I have a garden to grow it in! Living on a boat and all, I don't have a very big yard :D
ant not aunt says: Aug 4, 2012. 4:26 PM
you don't need a garden i grew a pumpkin in a large pot and trained the vine to a railing. when fruit formed i used pantyhose to support the weight.
Hiroak says: Jun 9, 2010. 3:55 PM
I'm on a boat Motherfu Ha ha very orginal I know I lived on a boat, the sail type for 2 years and build floating garden boxes out of blue foam board. I had a slip larger than my boat so I just attached them to the dock. Then I got a bigger boat and build two above ground planter boxes on the deck. I even tried to grow an orange tree, to combat the scurvy but I live in Alaska.
corey_caffeine says: Jun 9, 2010. 3:01 PM
you do, it's just REALLY flooded
aseaheru says: Jan 2, 2011. 1:37 PM
put it on the mast head. o_0
xenor says: Jun 9, 2010. 10:50 PM
So... rice?
aseaheru says: Jan 2, 2011. 1:39 PM
salt water.......o_0
corey_caffeine says: Jun 10, 2010. 1:31 AM
exactly
Nukeman says: Jul 10, 2012. 12:55 PM
The Lexan to build this costs about $80. Will plywood work?
GreenMeUpScotty says: Jun 4, 2012. 6:14 PM
Does the Box have to clear and made out of plastic?
myakka says: May 26, 2012. 5:35 AM
How about triangular( pyramid) shaped ones. Or dodecahedrons!
myakka says: May 25, 2012. 10:40 PM
Or how about make the entire alphabet
kjohnson40 says: Oct 15, 2011. 5:35 PM
we grew a square honeydew (by accident) it was in a cement block we used to "fence" the garden with.
jameseyboy says: Oct 15, 2011. 10:27 AM
HELP barbies on the bbq
tinker234 says: Jun 19, 2011. 7:37 AM
wow i love this
moonchylde says: Jun 18, 2011. 7:29 PM
I wonder if this would work with tomatoes, or if the boxes would be too heavy for the vine to support. Another thought I had was two-liter pop bottles (watermelons with feet; they'd also be good for watermelon spikes :P), though I'm not sure if the fruit wouldn't split the plastic. I might experiment with this.
geoslim13 says: Mar 17, 2011. 8:51 AM
to quote Eurotrip "Gotta love that exchange rate!"
yiumanwan says: Jun 7, 2008. 10:48 PM

does it taste diffrent like sweetness

aseaheru says: Jan 2, 2011. 1:38 PM
soil might change the taste, also chemicals, water, but thats all that might change the taste
Zaphod Beeblebrox says: Dec 30, 2009. 6:41 AM
nope exactly the same exept shape
ReCreate says: Oct 7, 2009. 3:29 PM
Wow how did you make large text??
Derin says: Nov 1, 2009. 2:26 AM
<h1>like this i guess</h1>
ReCreate says: Nov 1, 2009. 12:18 PM
Hmmm...no...
qballcat says: Mar 16, 2010. 4:44 PM
Hmmm....yes.  you just do it in the instructable, not on the comments.
axlrose says: Feb 22, 2008. 5:21 PM
That is so awesome how you can grow square watermelon and sell them for $82.00
bFusion says: Jun 10, 2010. 5:22 AM
Yeah, but you have to live in Japan for that to happen. Everything, large fruit especially, is expensive over there.
aseaheru says: Jan 2, 2011. 1:36 PM
1st of season/perfect are more expencive
awesomeman2468 says: Dec 26, 2010. 6:56 PM
in a historical note I believe this was started in china and in most recently the chinese made melons with the mascots from\for the bejing olimpics
indestructibleguy says: Jun 9, 2010. 6:18 PM
would it work with apples? then you would cut a small cube from inside an fill it with caramel and chocolate syrup... hmmm....
paperclip32 says: Jun 11, 2010. 8:33 AM
I think if you made this box and put a pipe on the middle,you'd have a holed fruit of which you can stuff.
indestructibleguy says: Jun 12, 2010. 8:16 AM
will the fruit grow around it?
paperclip32 says: Aug 22, 2010. 8:17 AM
It should.I've seen Mickey shaped ones in Disneyland too.
chocogrape says: Nov 14, 2010. 9:06 AM
I think those are regular apples with marshmallows for ears.
paperclip32 says: Nov 15, 2010. 4:10 AM
I said that further down.
hawkfrost64 says: Jul 22, 2010. 3:42 PM
you can use a cinderblock.
That Inventor Dude says: Aug 26, 2010. 1:53 PM
genius
Kofoed says: Jun 22, 2010. 8:34 AM
god, that looks so cool :D
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