Tumbler grit For tumbling stone

• Some stones can NOT be polished...stones with hardness between 5 - 7.5 is the best.
  Agates and Jaspers types is the most easy to polish.

BARREL SIZE (lb)	Grits and Polish in Tablespoons Needed
	Step 1 60/90 Silicon Carbide	Step 2 120/220 or 240/400 Silicon Carbide	Step 3 500-600 Grit (Pre-polish) Aluminum Oxide	Step 4 Polish Aluminum Oxide
1.5	½ to 3	½ to 3	½ to 4	½ to 4
3	1 to 3	1 to 3	1 to 4	1 to 4
4.5	2 to 6	2 to 6	2 to 8	2 to 8
6	2 to 8	2 to 8	2 to 10	2 to 10
12	3 to 12	3 to 12	3 to 14	3 to 14

	Step 1. Grit 60/90 Mesh Silicon Carbide
	Step 2. Grit 120/220 or 240/400 Silicon Carbide
	Step 3. 500-600 Grit (Pre-polish) Aluminum Oxide this step prepares your rocks for polishing. removes scratches made by coarse and medium grit.
	Step 4.

Tumbler madia Tumbler media has three functions:

1. it delivers grit to hard-to-reach rock surfaces;
2. it is used as a filler when tumbling a partial load;
3. it is used to cushion fragile rock materials during the tumbling process.

Plastic pellets are to be used in rotary tumblers (they produce too much "bounce" in a vibratory). Ceramic pellets are used in vibratory tumbling but many people also use them in rotary tumblers. If you are tumbling a load of large rocks they will have very few points of contact. However, if you add ceramic cylinders to fill the voids between the rocks there will be a lot more points of contact where grinding action can occur. The result will be faster grinding and smoothing done on surfaces where rock-to-rock contacts would not occur.