Polishing Ground Glass

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Polishing Ground Glass
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POLISHING GROUND GLASS
Glass parts (think marbles or lab equipment) are
not the most common but when made often need to
be polished after being ground to the correct
shape and size. The grinding process leaves the
surface with an etched, scratched, matte
finish. Barrel tumbling these types of parts is
ideal as it is a less aggressive process than
vibratory tumbling and can be used wet or dry
depending on the process requirements. Dry
tumbling is a longer cycle time but will usually
provide a better finish on glass. These soda
lime glass balls were tumbled for 36 hours with
Hardwood Media and the Hi-Gloss Final Finishing
Cream. This resulted in the clear finish seen.
Polishing Ground Glass
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A multi-step process using Hardwood Media and
succession of finer and finer Finishing Creams
may have reduced the overall cycle time however,
this would have required more labor to change out
the media with each step. A single step process
is the easiest and most economical method to get
the desired results.
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