this will take more than a few minutes to build. But the results are
worth the effort.
the diameter of the track ball on your compter, or buy a trackball
if you do not already own one (I think they are vastly superior to
the mouse, trackpoint, or trackpad)
a glide ball of the same diameter. You can find balls anywhere from
1" to 2 1/2" in the stores. A good source (and a great catalog
of novelties and inexpensive toys), is Oriental
glide balls are poorly made, with an irregular seam. This seam will
catch and skip on the trackball support mechanism. So the seam must
be smoothed and filled first.
is the hard part. Fill the seams with a good quality, clear plastic
glue. Many epoxies will not stick to the glide ball plastic (typically
polystyrene), so you will need a glue meant for this purpose. Check
a hobby or a plastics supplier for appropriate adhesives, and make
sure to work in a well ventilated area.
the glue has fully dried, polish the surface to a smooth finish. The
best technique uses a motorized polishing wheel and rouge, but fine
sandpaper followed by a plastic polish (whitening toothpastes sometimes
work well) will brighten the surface, albeit with much elbow grease.
Contact Greg Blonder by email here - Modified
Genuine Ideas, LLC.