Corn Cob Beads | McMaster-Carr

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Abrasive Blasting Material

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Fine Polishing

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For Finish

Tumbler Motion

11 Products

Abrasive Blasting Media for Delicate Materials

Remove paint, coatings, and rust from delicate materials. Softer than other abrasive blasting media, this media cleans away contaminants without scratching or marring the underlying surface. It is a good choice for finishing soft metals, plastics, wood, or sensitive equipment.

Our abrasive blasting materials are sorted from least to most aggressive. The more aggressive the media, the more material it removes from your surface.

Both particle mesh size and grit measure the size of the abrasive particles. The higher the number, the finer the particles are.

Corn Cob

Image of Product. Front orientation. Contains Annotated, Inset. Abrasive Blasting Media. Abrasive Blasting Media for Delicate Materials, Corn Cob.

Clean without abrasion—corn cob is gentle enough to clean wood, fiberglass, plastic, and masonry without causing damage. It won't frost glass, pit aluminum, or raise grain on wood.

Low Reusability—Effective for a handful of cycles under normal blasting conditions.

				10 lb.		40 lb.
Particle Mesh Size	Grit	Recommended Blast Pressure, psi	Reusability		Each		Each
10-14	16	20 to 80	Low	32725K42	000000	32725K61	000000
14-20	20-30	20 to 80	Low	32725K46	00000	32725K63	00000
20-40	36-54	20 to 80	Low	32725K48	00000	32725K67	00000
40-80	60	20 to 80	Low	32725K49	00000	32725K68	00000

Tumbling Media for Aluminum, Brass, and Soft Metals

Granule

Corn Cob

Made of soft material, this tumbling media gently finishes aluminum, brass, and other soft metal parts without distorting them. Choose the shape that best matches the contours of your part and a size that’s large enough not to get stuck in recesses and holes. You can also mix shapes and sizes to tailor the finish to your part.

For Polished Finish—Often used as the final step in finishing, this media brightens your part’s surface with an extremely shiny finish. It rubs the surface without wearing it down to preserve the shape and sharp edges.

Dry Tumbling Condition—Run this media dry and it won't stick to your parts. Dry media simplifies setup and cleanup, but it takes longer to finish your parts than wet media.

Corn Cob—These corn cobs have larger particles than those used for abrasive blasting. They’re cleaned and treated for use in tumblers.

						15 lb.		30 lb.
	Density, lb/ft³	Recommended Media to Parts Ratio	Abrasion Type	Tumbling Condition	Material		Pkg.		Pkg.
For Polished Finish







				Granule

				30	7:3	None	Dry	Corn Cob	47575A12	000000	47575A11	0000000

Tumbling Media Conditioners

Corn Cob Media Conditioner—Restore the polishing effectiveness of previously used corn cob media. Add this conditioner to your used media and run the tumbler to refresh it.

		Each
Corn Cob Media Conditioner	47575A13	000000