VEVOR KD-B1031 Mode D'emploi page 26

tumbling.It's important to check over your tumbling rough for any rocks
that have noticeable fractures. lf you find any rocks that have visible cracks
or fractures make sure to remove them from the batch. Or, even better, you
can break those rocks up along the fractures and tumble the pieces.
Proper Size
Even if your rocks meet all the other criteria they need to be the right size.
ldeally your tumbling rough will consist of rocks that are between 1/2" and
1-1/2" in size.If they're any bigger than that they are probably too large for
most tumblers and won't get proper tumbling action, while anything smaller
will probably just get ground up entirely over the course of the entire
tumbling process.It's also important to have a nice mix of rock sizes in your
rough, The best rough will have a nice distribution of differently sized rocks.
This distribution creates nicer tumbling action in the barrel and increases
the number of contact surfaces between the rocks, making the tumbling
more efficient.
Best Rocks to Beginners
The characteristics and properties of certain rocks make for great beginner
rocks to learn with to tumble. You will have a higher success rate than most
other rocks.These rocks will almost always give you a fabulous polish
when they are completed as long as you follow standard tumbling
directions.
The overall best rocks for tumbling beginners are:
Agates - colorful, and pretty patterns, easily found, and cost varies widely
Jaspers - usually bright colors, and can have interesting patterns, easily
found
Chalcedony - can have patterns, usually translucent, and is generally low
cost,
Flint - very high polish, can have vibrant colors and patterns, can be easily
found
Chert-like flint can have nice colors, easily found.
However, not any old piece of agate or jasper will do when you're
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