GET READY TO POLISH

Visit our Gallery of polishing done with the Ultimate Grinder

© 2009 - Helvetia Rock Shop LLC All rights reserved.

This page last modified on Thursday, December 24, 2009

© 2009 - Helvetia Rock Shop LLC All rights reserved.

OPERATION

DO NOT try to sand down poorly cut stones. This will cause excessive wear on you and your sanding belts and lead to frustration and heat damage to your stone. Poorly cut stones should be re-cut with a sharp and true saw or ground flat with an aggressive diamond grinding wheel. The best method to prepare rocks for sanding is to use a flat lap to remove saw marks.

DO NOT DISPARE: One of the great things about the ultimate is that it will sand down all but the most poorly cut stones. Some patience and operator finesse is required but this is where the ultimate shines.

DO NOT try to sand oil contaminated specimens. All oil contamination of the cut rocks should be thoroughly removed by an environmentally friendly method before sanding. We find that a gentle baking at 250 degrees for several days works for most oils and material. Some petrified wood that is very porous may take significantly longer. Other methods for drying oil out of a rock include boiling in water or leaving exposed to sunlight for an extended period of time.

NOT ALL ROCKS WILL SAND THE SAME.  Be Aware of the type of mineral(s) that you are sanding.  Softer minerals will not poliah as easily as harder.  Some harder minerals such as tourmaline will not sand well with silcon carbide abrasive.

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