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Melting |
There should be no
difference in beads made of polyethylene from different suppliers.
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Adhesion, good paper |
I want the ironed beadfigures to stick to the paper, so I can lift the paper and then loosen
the figure with a semisharp knife. It will prevent the figure from getting deformed, when
it is taken from the pegboard.
|
Adhesion, ot so good paper
|
There should not be any difference with paper of different qualities.
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| Bending backward when the figure is formed |
It should be easy to bend the warm ironed figure, so that you can make nice ornaments with beads.
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| Bending forward when the figure is formed |
It should be easy to bend in both directions.
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| Bending a testpiece backward |
The completed figure should be tough
enough to stick together even if you break it. It makes it so easy to fix it
with wooden glue if an accident happen.
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| Bending a testpiece forward |
The material should be tough enough to not crack if you bend the figure
forward.
|
| Putting together with masking tape |
It must be possible to tape the pieces
together to make boxes, dolls furniture and more.
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| Putting together with wooden glue |
It must be possible to glue the pieces
together with glue ment for wood to make boxes, dolls furniture and more.
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| Elasticity |
You should be able to make bracelets, watches, rings and other things,
that can changing the form and then can resume its original form.
|
| Summary | Results of the tests. |
1 Melting
Tested by ironing green and red beads together.
No difference noticed.
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2 Adhesion, good paper
Tested by using a cheap paper, which previously proved to be very
good to NABBI-pearls.
No difference noticed.
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3 Adhesion, ot so good paper
Tested by using a paper, who gave me and other users
problems because of it sticking to the beads.
Now it worked well with both
the green and red beads and even if they were cool when the paper was removed from the beads.
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4 Bending backward when the figure is formed
Tested with the
angel. The warm green angel was softer than the red. It was easier to change
the shape of the green. It is negative when you loosen a hot figure from the
paper with a knife, because a softer figure easier deform. It is positive
when forming a complex figure, since a softer figure is easier to form.
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5 Bending forward when the figure is formed
Tested with a teddybear. The
same results as with the angel.
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6 Bending a testpiece backward
Tested by bending a sample of 18 beads long with 6 green and 6 red beads in
the width. The plate was bended in 180 degrees and then back to 0 degrees. This
was repeated 50 times. Beads were still together and no difference between green
and red beads could be observed.
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7 Bending a testpiece forward
Tested by bending a sample of 18 beads long with 6 green and 6 red beads in
the width. The plate was bended in 90 degrees and then back to 0 degrees. This
was repeated until a crack in the red beads occurred. The result could not be
repeated. They refused to crack despite attempts on several testpieces.
No difference between green
and red beads could be observed.
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8 Putting together with masking tape
Tested by taping together samples and dolls furniture. Works
fine. No difference was observed.
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9 Putting together with wooden glue
Tested by
glueing together samples and dolls furniture. Works fine. No difference was
observed.
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10 Elasticity
Tested by making the snakes on the long
rectangular pegboard and let them cool down around an object with a diameter of 4.5
cm. When the were cold they were placed around an object with a diameter of 9 cm. There
they sit for 35 min. Then they were measured. The green snake had an inner
diameter of 6.2 cm and the red 6.7 cm. After 1.5 hours they were measured again.
Then the green snake had an inner diameter of 4.8 cm and the red 5.0 cm. 12
hours later the measures were unchanged.
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11 Summary
With the use of these test methods could only be established that the samples significantly
differed on the formstability when they were hot.
Tests conducted in March
1999 by Emo Persson
Photos, text and design © Copyright Emo
Persson
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Pictures, texts och patterns © Copyright Emo Persson |