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information needed on a school project. a.s.a.p.

updated thu 9 mar 00


Curtis Bumgardner on wed 8 mar 00

My name is Curtis and I am a High School
I was wondering if you or anyone you know could help
me on my school project. I would greatly appricate
it. I am needing some information on the history of
White Earthen Clay, Grog, Sand, Zonelite, and
Styrofoam. I have to make a report for my science
fair and I am having trouble finding information on
these chemical. Listed below is my science fair
project. It might anwser some of your question on
what I am doing. Please help if you can. Thank you
for your time. Please reply A.S.A.P.

Curtis Bumgardner


Mixing Clay

1. Make seventeen, two pound balls of wedged White
Earth Clay
2. Compute 10% of Zonelite by weight and mix with a
two pound ball of clay
3. Repeat step two with 20%, 30%, and 40% of Zonelite
4. Repeat steps two and three with Styrofoam, Grog,
and Sand for a total of sixteen mixed balls
5. Construct seventeen pots on the potters wheel, one
without any mixture for the control and the remaining
sixteen pots for testing the different mixtures
6. Make each pot 4 3/4 in. tall by 4 1/2 in. wide by
1/4 in. thick
7. Let dry for bisque firing

Firing the Pots

1. Bisque fire all pots to cone 04 in an Electric
2. After the all of the pots have cooled from the
bisque firing, glaze a spot on each pot the glazing of
each pot helps to determine what the temperature is
and how hot the pot is inside the Raku kiln)
3. Fire the Raku Kiln to 816:C (1500:F) with three
pots in it (use a Pyrometer to tell the temperature
inside the Raku kiln)
4. When pots reach 816:C take them directly out of
the kiln and put each pot immediately into a separate
bucket of 12:C (79:F) water
5. Repeat steps three and four until all pots have
been fired
6. Examine all pots for cracks and breaks
7. Record results

Break Testing

1. Take a piece of conduit four feet long and tape it
to a solid immovable structure so the conduit will not
move (do this so the ball bearing will the hit the
same spot everytime)
2. Tape a measuring device (that is in inches) to the
pipe to calculate the distance for the drops
3. Lay a pot on its side in a box of sand
4. Move the box of sand under the conduit until the
pot is directly beneath the conduit
5. Drop the ball down the conduit from one inch
6. Look for any cracks or breaks and record results
after each drop
7. Repeat step five with two inches, three inches,
etc. until the pot breaks
8. Repeat step six after each drop
9. Repeat steps five through eight for each pot until
all 17 pots have been broken

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