Berg's logoBerg's Rock Shop, Inc.
our 30th year

Operating Instructions
for the Calway Lot-O-Tumbler,
a Vibrating Rock Tumbler

Calway mounting instructions: Using Solid cement block (40lbs.)- Coat
top of block with latex base paint (old inside wall paint will do nicely).
Allow to dry. Remove protective paper from double sticky tape on bottom of board.
Apply unit to block and press down firmly.
On Floor Tile Over Cement or Cement Floor- Remove all old floor
wax and dirt from tile. Remove protective paper from double sticky tape on bottom
of board. Apply unit to floor and press down firmly.

  1. Fill barrel with agates-about four pounds. These can be mixed sizes. (Action is fast, but gentle.) It is important to keep th e barrel full. If after grinding it is not full, add some from a previous batch to keep it full.
  2. Rinse agates with water to remove mud. (Submerse filled barrel in container of water. Remove, shake and drain off water.)
  3. Replace barrel in frame firmly. Add 2 tablespoons medium 150/220 size grit. Place cap on barrel.
    (Punch small hole in cap to relieve pressure.) Add 1/2 cupful of water to keep creamy consistency.
  4. Repeat steps 2 and 3 at 12 hour intervals until desired amount of agate has been removed. Average time: 3 to 4 days. Add 1 capful of water after 12 hours if rocks cannot be washed.
  5. Repeat steps 2 and 3 for 24 hrs.
  6. Repeat steps 2 and 3, substituting 600 grit. Tumble 24 hours or less. Use only 1/2 teaspoon of 600 grit.
  7. Repeat steps 2 and 3 using only 1/2 teaspoonful of tin oxide, Rapid Polish No. 61, or Lusterite Formula ll.
    Tumble 24 hours, and no more. Rinse thoroughly and admire.
    Suggestion for easy clean-up: About 15 minutes before cleaning out each time, add 1 cap full of water and about 2 drops of liquid detergent. Let run for 15 minutes and your rocks will wash off sparkling clean.
    The manufacturer furnishes more Detailed Instructions with the tumbler.
      This was copied for your convience by:

Calway Vibrating Tumbler

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Berg's Rock Shop, Inc., 1231 Pearl Street North
Prescott WI 54021-1813
telephone 715-262-5841, fax 715-262-5736
Email: [email protected]

� Berg's Rock Shop, Inc. 1999, 2000, 2001

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