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well, it is easy to make this maglev CD. a CD which levitates magnetically. you need
a lot of ring magnets, old CDs and a CD box. take an old Cd box and remove all the CDs
from it. what will remain will be the base and the central stem. cut this stem at a height
of approximately 3cms. then place an old CD on the central stem. apply glue in a ring
all around the periphery. let this glue dry a bit and then take lots of ring magnets and
place them in a circle. you will get a ring of magnets. this is the top view. now you
take another set of magnets and stick them to the second CD. both these CDs have similar
polarities. apply some more glue so that magnets adhere very tightly to the CD. now take the
top CD and if you put it on the stem. magnets facing each other would be repelling and so
the top CD will be levitated. you can also spin it, it will rotate. it will keep rotating
for a very long time because there will be very little friction. it is rotating due to
pushing of magnetic forces. apply some glue in the center and stick a lid. this would
be a handle to help you spin the top. now place the top CD in its place. you will see
that the top CD is magnetically levitating. if you spin it, because of low friction it
will keep rotating for a very very long time. what we can also do is, apply glue on the
top surface of the VD and stick a seven colored Newton's disc. because this is a very nice
mechanism to rotate CD for a long time. if you spin the colored wheel all the colors
would coalesce and a color of greyish white. so this is a two in one toy. its a levitation
CD and also a color disc.