Why I won’t be in a hurry to use plaster of Paris again!

February 23, 2013 at 12:03 pm Leave a comment

For Christmas Emily received a make your own fairy snow globe.  It actually was a late Christmas present and by the time she received it we were planning her fairy birthday so we thought it would be a good activity to do at the party.

It was sitting in a box and then I realised I should get onto making the models for the girls to paint at the party as they took a couple of days to make.  I blithely followed the directions without starting at a clean OUTDOOR space.  The liquid I had mixed promptly filled the model, dripped out the bottom and into the kitchen sink.  Do did the second lot!  I fear for my kitchen sink now (I sent down ALOT of HOT water).

After this I decided it was time to pack it in and try again another day after some research.  This research showed me that it is about 2 parts powder to 1 part water.  Further research decried the product, saying waste of money etc etc.  Anyway heart in mouth I tried again, OUTSIDE, with a tablecloth (plastic) over the outdoor furniture.  I then mixed with half the amount of water listed in the instructions and IT WORKED! Yay!  So after a big mess involving plaster setting  before I could pour it into the mould and just plaster everywhere I ended up with enough moulds for the party.

Plaster of Paris Plaster of Paris Mess Plaster of Paris finished

The kids had fun painting – some put more effort into it then others.  Next time I think I will just buy a kit where the plaster is already made and the kids can just paint.  Though now I have the moulds I am thinking I will make the bicarb dough and press them into the moulds and then bake.

2 c. baking soda
1 c. cornstarch (cornflour)
1 1/4 c. cold water
I wouldn’t recommend using plaster of paris with young kids.  I made all these without assistance because of the risk of breathing the dust in and just the plain mess of it all.  I think EMily may have stirred one batch but that is about it.

Entry filed under: Activity, craft, Designs, science experiments. Tags: .

Recount and Museum Visit Emily’s Birthday Fairy Cake

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