Introduction: Plastic Bottle Crab
Make a 3d crab out of an old bottle
Step 1: Materials
1 plastic bottle (one crab per bottle)
1 pair of scissors or whatever cutting instrument you are comfy with
optional
enamel paint or other pigment that will stick on the plastic
Step 2: Cutting the Eye Stalks
cut off the top of the bottle.
cut a inch and half strip and fold it up..the eye stalks will be cut out of this
Step 3: Cutting Out the Claws and Legs
cut two stips on either side of the first flap.. give them spoon shaped ends(refer to the image) we'll fashion a pair of claws from these
cut as many more flaps as you like for the legs...i prefer six legs, but some like 8...whatever is biologically accurate i guess
Step 4: Eyes, Claws and Legs
cutout the eye stalks...you could stick marbles or buttons on the stalks for eyes i guess
fold the claw-arms so they become more rigid...split the spoon and mke folds like in the image ..this gives you the claws..
the legs are pretty simple..fold fold fold :)
and thats about it.. you can decorate yours with paint and whatever else you like :)
enjoy
dangle this crab under a light or in a window...
Step 5: Paint It Up White
i used acrylic paints, but you could use enamel paint or spray cans too.
1) paint a base coat of white as the primer.. priming the surface ensures that your colours will turn out bright. a common mistake is that people spray on the colours they want.. and then it doesnt quite turn out as bright as they thought it would.
Step 6: Paint Your Colours
once the base paint is dry, go ahead and paint on your colours.
i've hand painted it, so it looks a bit shabby .. for a finer finish i would have used spray cans or an airbrush
Step 7: Stuff Created by Kids
I occasionally do workshops with kids at schools or children's homes, here are some of their creations. sometimes i come up with new stuff like the scorpions you see in these pics

Participated in the
Keep the Bottle Contest
19 Comments
6 years ago
That is so cool!
13 years ago on Introduction
Nice, but I like the soda can one better.
Reply 13 years ago on Introduction
me too.. this only looks great once painted. unfortunately i gave away the painted one long ago before taking any pics :( , havnt had the time to do it again.
Reply 13 years ago on Introduction
also this one is more child friendly :) (no razor sharp edges)
Reply 13 years ago on Introduction
Yeah lol.
13 years ago on Introduction
this is realy cool no where i could get some paint to paint it??
Reply 13 years ago on Introduction
i've used regular enamel paint... the glossy kind used to paint on wooden doors n stuff you can also use a spraycan for a good finish
Reply 13 years ago on Introduction
oh, ok thanx
14 years ago on Introduction
It would be awesome to see an uncut bottle with all the cut marks drawn on it with a permanent marker. This instructable would be much easier to figure out if you did. That being said, the end product looks great!
Reply 14 years ago on Introduction
yes i think i'l put some diagrams too.
Reply 14 years ago on Introduction
Please do, i wanna try this
Reply 14 years ago on Introduction
have added diagrams...couldn't figure out how to shoot the lines on the bottle, without making it look too complicated :)
Reply 14 years ago on Introduction
Hey, those diagrams are great. I'm increasing my rating a bunch!
Reply 14 years ago on Introduction
Cheers Ill get started
14 years ago on Introduction
That is REALLY good! Keep going with him and add more angles/folds to create even more of a 3D effect. Those claws would look even more impressive, with two more folds down the middle of them so you could give them a real curvature.
Reply 14 years ago on Introduction
thanks for the tips, will work on it :)
Reply 14 years ago on Introduction
Don't get me wrong , he is AWESOME!! Prior to you posting this I had an Octopus, all ready to go. I should post that I'ble and we could have a little under water party.
Reply 14 years ago on Introduction
i almost turned i into a jelly fish, with thinner strips.. octopus sounds good...put it up quickly :) and if you can get your hands on a bunch of bottlecaps or toothpaste tube caps, you could use them as suckers for the tentacles :)
Reply 14 years ago on Introduction
ya think i'll do that.. seems too flat right now..