Another Source for Red Granite Spheres?
- Anyone interested in acquiring the red granite spheres Mr. Hamel needs
for his projects could perhapsget them here...
(You will need to contact them an make an inquiry for estimates based
upon sizes & quantity.)
Try this group. Maybe they have some information on source locations.
Even machines, which are not hard to use. David could consider on
getting one of these or having someone build him one. I would, but I am
so engrossed in my own work, but perhaps I could help.
The machines are not hard to envision. 3 motors or 2, going into a
central position. Diamond cups with a 25 degree angle bevel or regular
steel cups with grit on them and using grit continuously.
Slow rotation with a gear reduction box, so that spheres turn slowly
while being ground down.
You'd also need a diamond bench saw, much like a tile saw, from Home
Depot or equivalent. Then you can take, pieces of granite, from pretty
much anywhere (I got mine from a place called Granite Concepts in
Concord, Ontario) and then cut them up into cubes, then facet them, and
then rough them into ball shapes on a grinder, and then place them into
To get accurate balls, you need to have them move erratic, not stopping
in movement on one arm of the machine. The balls must move chaotically
and never be resting in one position. Slow turning as well, to remove
the material from the rough sphere slowly. This I have noticed, that if
one motor holds a certain position of the ball, then ball goes oval.
Remove the oval on a grinder and then use oversized grinding cups and
keep the ball in erratic movement until round, and then go back to our
finishing cups and polish the ball or remove mroe material to a required