The question here is whose head you would want to chop off...
out of cardboard, white paint, and green paint. dont forget tape!
how can i make a radio made of cardboard
You would likely be killed BY a guillotine if placed IN a guillotine.
how to make a simple model piano out of cardboard
I suggest the use of cardboard to make cardboard egg crates.
The Guillotine
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a guillotine
You could not make it with entirely cardboard, but you could use it for wings if you wanted to.
Some cardboard and paper are recycled to make new cardboard, but the primary raw material for cardboard is wood (celulose).
You can make cardboard more durable by adding layers, using thicker cardboard, or applying a protective coating like varnish or sealant.
A bin can be made out of a cardboard box without doing anything at all to it. However, if the cardboard is in pieces, it can be glued together with wood glue to make a bin.