Cutting short
ribbons and short narrow strips without a shredder
For those who want to build small objects
with PET ribbons (or strips) but don't have a PET shredder, there is an
alternative.
Short ribbons and short narrow strips (about 30cm long) can be cut out
using only a scissor or a cutter blade.
Let's first cut off the bottom and the top of a 2 liters straight PET
bottle, in a way to obtain a (aproximately) 20cm long cylinder -- it
can vary in size according to bottle's brand, height, etc.
Then, let's make a straight cut (from bottom up) through the cylinder,
to
open
it and get a rectangular PET sheet aproximately 20cm wide and 30cm
long.
Now, using a scissor or a cutter blade and a ruller, we can cut the
wanted ribbons or narrow strips.
Hints:
- For a more accurate cut of narrower strips,
it's advisable to start cutting from the left side of the PET sheet.
- When using a cutter blade, double attention to
avoid accidents.
- The width of the PET sheet depends upon the
height of the bottle.
- The heigth of the PET sheet is a little more
than three times the diameter of the bottle -- it's the good old
constant Pi, that values 3.1415...
- Use aways new and well clean bottles.
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