Hi I hope I can get some help from a carver. I have been given two
large pieces of rutilated quartz. The owner wants all the surface
ground down, sanded and polished somewhat close to the natural shape.
(less all the bumps) I have the rough grinding finished. I used my 50
grit eight inch grinding wheels. I can then use an 80 grit, 100 grit,
220 grit metal wheels. (All 8 inch.) For sanding I have an 8x3 inch
rubber drum. I have a 100 grit belt, a 220 grit belt, a 320 and a
600. I have done smaller pieces of similar material but these pieces
are from 1 to 2 pounds. (I am guessing) The surface area is quite
large with some inside (Concave) curves.
Here is my problem. When I miss a spot with one step, it takes so
much more time with the next stage. I usually just go back over the
whole area again with the coarser grit wheel. It seems that there
should be some way to mark the material so that I could see where I
have ground so I would know when I have covered the whole area
without leaving places that I have not covered. What is that process?
The material I am working on is water clear rutilated quartz. Just
about all the fractures are grounded away but I don’t want anything
to mark the outside that would get in any hidden crack or fracture. I
also would not want to permanently stain inside the surface.
What do carvers use for something like this? Where can I go to do
some research? I will start to do some looking on my own tonight as I
want to be able to get these pieces finished for the owner.
Thanks for all help.