this is a youtube video that i found.
and this video is about making something like a key chain,
he uses the acrylic plastic, to make the key chain
while we used it for our night light and in our school,
we uses a machine, and we just have to move the acrylic,
and follow the lines. but in this video,
the person uses his own hand and move the machine or something.
so i think it will be more inconvinent, and the things that he made
are so nice ! =X hahas. okayys.. enjoy! ^^