Plastic Tumbling Media

Plastic Media | Smooth Tumbling Media for Soft Metals and Pre-Plate Finishing

This media is recommended for general-purpose metal removal, pre-plate finishing, and moderate cutting. It is especially useful for soft metals such as brass and aluminum and for stringy materials where controlling burr rollover is important.

Kramer Industries supplies Plastic Media in a variety of shapes, sizes, and formulations for different finishing requirements. The material produces a smooth, even surface while providing enough cutting action for deburring and surface preparation.

Plastic Media for Mass Finishing

Plastic Media is formulated to create a smooth surface while remaining aggressive enough for deburring metals such as brass and aluminum. Compared with ceramic, it produces a more even finish with little shine. This makes it useful when surface quality is more important than maximum cutting force.

The medium bulk density of Plastic Media makes it suitable for parts where a lighter finishing material is preferred. Plastic Media is also well suited to fragile components and applications where the finishing process needs controlled contact with the workpiece. Plastic vibratory media can also be selected when a controlled vibratory finishing process is required.

Tumbler media for plastic applications should be selected according to the part material, geometry, burr condition, and desired finish. tumbler media for plastic can also be evaluated by cycle time and required surface quality.

Selecting the Right Plastic Tumbling Media

The product is available in pre-plate, general-purpose, fast-cutting, and fast-cutting zircon formulations. Each formulation provides a different balance of cutting action, finish quality, wear, and cycle time.

The KV pre-plate formulation is designed to produce a very smooth finish and is suitable when parts will undergo plating or another subsequent surface treatment. KX general-purpose material is intended for standard applications and provides good metal removal with minimum media loss.

KXV is a fast-cutting option that produces a finish suitable for anodizing or painting. KZ1 combines fast cutting with zircon for heavy-duty applications where good wear and reduced cycle times are important.

When selecting plastic tumbler media, formulation is only one consideration. plastic tumbler media should also be matched to the finishing equipment and part geometry.

Shapes and Applications

Plastic Tumbling Media is available in cones, cylindrical wedges, pyramids, tetrahedrons, triangles, tristars, and wedges. Different shapes can be selected according to part geometry and the finishing objective.

Tetrahedrons and cones can be useful when parts have holes or recessed areas. Triangles can provide contact around corners and flats, while other shapes can provide different combinations of surface contact and access.

Plastic vibratory media can be used where controlled finishing is required in vibratory equipment. The appropriate shape should be selected according to the machine, part geometry, and desired surface result. Kramer Industries can help match the shape and formulation to the application.

For applications involving plastic components, tumbling media for plastic parts can provide edge rounding, removal of machining lines, and surface refinement without the heavier contact associated with denser media.

Pre-Plate and Surface Finishing

Plastic Tumbling Media can produce a smooth surface with relatively controlled cutting action, making it useful for preparing parts before plating.

Plastic Media is particularly useful when the objective is to improve surface uniformity while avoiding excessive material removal. The KV formulation is designed specifically for pre-plate work, while other formulations can be selected when additional cutting action is required.

plastic tumbler media can also be used for parts that will be anodized or painted. KXV fast-cutting material is formulated to leave an excellent finish ready for these subsequent processes.

Choosing Media for Soft Metals

Soft metals such as brass and aluminum require careful media selection because aggressive finishing can alter edges, surfaces, or dimensions. Plastic Tumbling Media is well suited to these materials because it provides controlled cutting and a smooth finish.

For stringy materials, Plastic Media can help avoid rolling burrs into holes. This makes the material useful for parts where burr control and access to openings are important.

When comparing plastic vibratory media with more aggressive ceramic options, the required finish and cutting rate should guide the choice. Plastic is generally appropriate when surface quality and controlled contact are priorities, while harder media may be selected for heavier cutting. For some jobs, tumbling media for plastic parts can provide a gentler alternative for edge refinement.

Kramer Industries provides multiple formulations and shapes so the finishing process can be matched to the material, part geometry, and production objective.

Plastic Tumbling Media Bond Description

KV – PRE-PLATE (Light Green)

A light weight media that produces a very smooth finish. An excellent pre-plate finish. Long wearing.

KX – GENERAL PURPOSE (Dark Green)

This formulation is used in most standard applications. Great metal removal with a minimum amount of media loss.

KXV – FAST CUTTING (Blue)

A fast-cutting media that leaves an excellent finish, ready for anodizing or painting.

KZ1 – FAST CUTTING (With Zircon) (Tan)

Heavy zircon-molded media. A general-purpose, fast-cutting media with good wear designed to produce an excellent finish with reduced cycle times.

Dimensions			Formulations / Bonds Bond Descriptions
A	B	C	KV	KX	KXV	KZ1
			Pre-Plate (Light Green)	General Purpose (Dark Green)	Fast Cutting (Blue)	Fast Cutting (With Zircon) (Tan)
5/8“	3/8“	1/2“	NS	S	NS	NS
11/4“	5/8“	7/8“	NS	NS	S	NS
SDS

S = Standard stock item (50 lb minimum order)
NS = Non-Standard stock item (Due to production scheduling, this item may be in stock – Please Contact Us For Availability – If not in stock, a minimum order of 500 lbs is required for manufacture)