This was a big hit last week, and I think I worked out a system where 20 to 30 casts could be poured in about 50 minutes without any tears ... especially mine!1. Give each student a square of heavy cardboard (about 6" ), a ball of clay (about 4" diam.) and a toy dinosaur (I had saved all of my son’s). They will also need a ring that is made from cutting an 11" x 3" strip from posterboard or similar, overlapping the ends and stapling it together.
2. Each student needs to soften the clay, make a ball, and then press it on their desk to make a thick pancake. They keep turning and pressing it until it is wider that the posterboard ring.
3. The students use the toy to make a deep impression in the clay and then place the clay on the square cardboard. The ring is centered over the clay and pressed all the way down. At this point the students are allowed to peel off and play with the extra outside clay while they wait for their plaster pouring.
4. I set myself up a mixing station by the sink, and mixed batches of plaster in a large plastic container. You need something that holds about 6 cups of plaster. Add water and stir, stir, stir, until it looks like pudding. Pour plaster into each students mold until you think about a generous 1" think layer is formed. Have extra containers to switch to as the plaster will start setting.
5. The plaster needs to dry at least an hour or so. The outer paper ring is then torn off and the clay removed to reveal the plaster cast. Paint with very watery brown paint to make it look like a real rock. Students from grades 1 to 4 actually thanked me for this project!
2. Each student needs to soften the clay, make a ball, and then press it on their desk to make a thick pancake. They keep turning and pressing it until it is wider that the posterboard ring.
3. The students use the toy to make a deep impression in the clay and then place the clay on the square cardboard. The ring is centered over the clay and pressed all the way down. At this point the students are allowed to peel off and play with the extra outside clay while they wait for their plaster pouring.
4. I set myself up a mixing station by the sink, and mixed batches of plaster in a large plastic container. You need something that holds about 6 cups of plaster. Add water and stir, stir, stir, until it looks like pudding. Pour plaster into each students mold until you think about a generous 1" think layer is formed. Have extra containers to switch to as the plaster will start setting.
5. The plaster needs to dry at least an hour or so. The outer paper ring is then torn off and the clay removed to reveal the plaster cast. Paint with very watery brown paint to make it look like a real rock. Students from grades 1 to 4 actually thanked me for this project!
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8 comments:
Hi Kathy!
I wanted to let you know that I posted about a Nevelson-ish sculpture on http://SMMARTideas.blogspot.com and referenced your site.
http://smmartideas.blogspot.com/2009/03/smmart-art-lost-things-sculpture-i-was.html
Thanks for your great work!
Lisa Bergantz
Love it! :)
tina
This looks like so much fun! Thank you for the great idea. I will do this with the kids for sure.
Did you use oil based clay for this? Just curious! It looks super fun!
I used Laguna clay - the kind used for ceramic projects. It's about $12 for a giant 20 lb. slab. Worked great, even when some teachers forgot to unwrap the casts for a day or two.
I discovered another terrific alternative to using glaze when working with clay....SHOE POLISH!
The clay only needs to be bisque-fired, and then using shoe polish (the type that comes in the round tins), you use old sponges to apply the shoe polish to the clay. The results are amazing! The more you "polish"(i.e. rub) the polish into the bisqued clay, the shiner a finish you will get. So the range can be from a natural looking finish to something with some sheen.
Very nice results and cuts down on glaze time/kiln disasters!
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