Giant Plaster Easter (Dinosaur) Egg

Giant Plaster Easter (Dinosaur) Egg
These will blow the mind of a child on Easter morning and is a fun afternoon project.  I made these for a video I shot.  We needed large eggs that I could put a hand inside and break out of, and these worked nicely.  But I also found that they were fun to make, great decorations and kids love them.  Thanks to Tom Cline for showing me his Giant Plaster Egg 12 years ago.
WARNING, this is easy to do, but tough to master.  It will take several attempts.  Be patient and do this in an area you don't mind getting dirty.  The eggs tend to explode when you are making them, (nothing dangerous, but messy) and you will get plaster everywhere.

 
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Step 1Materials

Materials
Plaster of Paris-one box.
Bag of 9" balloons-round (but really Egg Shaped) clear is best, or white  or yellow, easy to see through.
Empty bottles of water-1/2 liter.  Easy to crush.
Mixing cup, more than 1/2 liter.
Mixing stick
Water
Pillow
Exacto Knife or Razor Blade
Sandpaper
Spray paint
Towels, drop cloth, (did I mention this is messy?)



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29 comments
Oct 17, 2009. 9:26 AMTetrafish says:
When I was a little kid I asked my Dad about a large Easter Egg (a folding paper one)  "what kind of bird laid that egg?"  And he said an Ooh-Wow bird. X-)

As for the candy egg...  I think they inject or funnel the melted chocolate inside, spin twist and clamp or tape it closed, roll it around to get a good coating inside, then roll it around on cool/cold water to help harden the chocolate, (there probably might be a coating inside prior to injection, but maybe it wouldn't matter) then blow it up more to separate it, then pop it around the egg.  ....I'd guess.   I hope that wouldn't make a mess. <:-/

Perhaps a way to pump air into the balloon would be better, unless these are going to be for yourself ('cause you'd blow your own germs into it if you blew it up manually). :-p
Apr 23, 2010. 3:39 PMBonifaceJ says:
IF you could get the chocolate in the balloon to work - I'm not sure it wouldn't be too fragile unless you got a lot of chocolate in there - then it shouldn't be too hard to take a hot knife, cut it in half, fill it, then reseal with the same hot knife.  You could even decorate it with colored chocolate from the candy making supply. 

Geez, I'm talking myself into trying this now.  :)
Oct 14, 2009. 3:36 AMAcidmoxy says:
This method could perhaps be used to make chocolate eggs too, unless theheat of the melted chocolate made the balloons explode too frequently,but the chocolate would set a lot quicker than the plaster. :)
Oct 16, 2009. 5:52 PMAcidmoxy says:
Waistlines are for pansies. Real men spend their days filling baloons with chocolate.And I'll be god damned if I'm not eating every last piece.
Oct 18, 2009. 5:15 AMAcidmoxy says:
If there's one thing more macho than chocolate eggs, it's EXPLODING chocolate eggs.
Oct 24, 2009. 2:04 PMfinfan7 says:
Try transparent polyurethane spray finish.  A few thin coatings would do it.
Oct 21, 2009. 3:22 PMgreenbean says:
You could try wax. If you can get a soft wax, such as surfboard or hockey wax (called sex wax), then you could make it glossy.
Oct 25, 2009. 7:12 PMgreenbean says:
Maybe if you melt it. I would just rub it on. If it is to rough after that, blow hot air at it to soften and smoothen it. Try this on something unimportant though because I haven't tried them.
Oct 24, 2009. 2:02 PMfinfan7 says:
It would be awesome to combine this with the dragon egg technique. (http://www.instructables.com/id/Make-a-gorgeous-Dragons-Egg/)
Oct 14, 2009. 9:39 AMbptakoma says:
How about blowing up the balloon first.  Pat the plaster overit.  You're sanding anyway, right?   I know you probablywouldn't get the same eggshell effect, but perhaps less risky.
Oct 15, 2009. 4:39 PMMr. Thrak says:
 Nicely Done. I did these with water ballons three summers ago. Iwould make it with the exact same process, except I put them in a bucketof water.
Then, I drilled a hole in them and filled them up.
Let's just say I won the water balloon fight. :D

Oh and even if you use a transparent balloon, it will become opaque assoon as you cover the thing with a layer of plaster.
Oct 13, 2009. 7:53 PMl8nite says:
its your creation, if you want to splatter/speckle it GO 4 it !!  My wife looks at a painting of a sunset on water and says ...."why did you make the water orange and pink? I dont like it"
 pppffffft... she sure likes the green when it sells though !!!

   This is a really cool idea ! I'll have to remember this for the g-kids easter hunt !
Oct 15, 2009. 9:33 AMthegamist says:
thats a pretty smart wife you got there
Oct 14, 2009. 1:01 AMrachel says:
This is a really novel idea, I like it!
Oct 13, 2009. 4:08 PMMolten Boron says:
Nice!
Oct 13, 2009. 12:44 PMKiteman says:
Very nice project - the splatter effect is most spectacular...
Oct 13, 2009. 2:41 PMKiteman says:
Tell her it's art.
Oct 13, 2009. 1:45 PMycc2106 says:
Smart! =)

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Author:Obediah(Razzle Bam Boom)
I'm a professional entertainer, mostly educational shows for elementary schools. I have one great wife and one great child, (3 years old). My proudest project is a Model of the Wright Brothers plane...
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