Media serves the purpose of interacting with each individual part to do the required finishing and separating parts from each other and it is made from a variety of materials such as ceramic, plastic, carbon or stainless steel, wood, leather, corncob, etc.

The choice depends on the desired result.

Plastic Media types are classified by their abrasiveness level and associated by color.

The advantage of plastic media is that larger sizes can be used without damaging most parts, thereby reducing the incidence of lodging. In some cases, the finish imparted by plastic media is preferable to that of other media products. Plastic generally cuts slower and gives a softer finish.

Less abrasive More abrasive

Ideal for soft metals, recommended for jewelry.


It provides a smoother finish than P6


For a faster cut and still acquiring a soft finish. For Pre-plate finishes.


Fast cutting on al types of metals


Removes flashes efficiently, used for all types of metal.

less abrasive more abrasive

With a minimum wear it can be used for all types of metal.


For polishing and deburring with a minimum wear. High density media.


Low wear, recommended for metallic and plastic media.


For polishing and deburring ferrous metals. May substitute ceramic media.


At ROTO-MEX, we manufacture the following forms:

Cones (C)
Pyramid (D)
Bowties (B)
Cylinder (CL)
Triangles (T)


Size A B
C55 2 2
C38 1 1/2 1 1/2
C32 1 2/16 1 1/4
C29 1 1
C19 3/4 3/4
C14 9/16 9/16
C10 3/8 3/8
Size A B C
B70 2 3/4 1 1/2 1 1/2
B38 1 1/2 1 1
B25 1 5/8 5/8
B19 3/4 1/2 1/2
Sizes A B
D40 19/16 19/16
D32 1 1/4 1 1/4
D10 3/8 3/8
Sizes A B C
T50 2 1 1
T25 1 9/16 9/16
T10 1/2 3/8 3/8
T6 1/4 1/4 1/4
Sizes A B
CL20 7/8 7/8


Our ROTOFORMS ® media is delivered in 25Kg Bags (50 Lb.)


We use plastic media when we:

  • Wish for a preplate finish
  • Will be working with soft metals such as aluminum
  • Require a softer finish.

┬┐What size and shape of media should be chosen?
We need to find the media that reaches all areas of the parts like passageways and blind holes and does not lodge in them.

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