VEVOR KD-B1031 Mode D'emploi page 22

soft and may not polish at all, Alternatively you may have tumbled the
stones on the coarse grit for too long. lf the stones reduce too quickly there
may not be any significant tumbling action, there needs to be enough
volume of stones in the barrel to sustain the tumbling /polishing action.
Q: Harsh, banging noise while tumbling?
A. When the machine is tumbling correctly it makes a sound rather similar
to pebbles being rolled gently from hand to hand. lf you hear a harsh,
banging noise from the stone it suggests that either you have insufficient in
the machine or that the mixture needs thickening (some people use a
wallpaper paste like Polycel to thicken the water a little so the consistency
is more like thin cream). lt is especially important at the polishing stage that
the stones are not banging hard against each other.
Q: Periodically relieve the pressure that may build up in the barrels?
A: During any tumbling process it is possible that gas may be generated in
the barrel it is advisable to lift the side of one of the lids every day or so that
the pressure is released. lt is remotely possible that pressure will build up
in barrel so as a precaution release the pressure to avoid a mishap.
Q: Barrel does not rotate?
A: Check that the barrel is not under-loaded or overloaded. Dry rollers and
barrel thoroughly, ensure there is no oil on the rollers or barrel. lf the rollers
appear glazed, rub lightly with sandpaper.
Q: If the barrel leaks?
A: This is most likely because you have put the lids on incorrectly. Follow
the instructions for opening and closing the barrels on the 11th-13th page
of this leaflet.
One final note: You can always experiment with adjusting the
duration of your tumbling.Every rock material is different, and this is
a fun hobby that encourages experimentation.Rock on!
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