Corn Cob Blast Media

Composition Materials has supplying Corn Cob abrasive media for over 60 years to companies worldwide. Corn Cob is a all-natural environmentally friendly abrasive with numerous industrial applications: Media Blasting, Tumbling, Polishing, Vibratory Finishing, Log Home Restoration, Absorbency, Deburring, Deflashing, Drying and Cosmetics. Corn Cob products are biodegradable and compostable. In blasting operations, Cob grit is reclaimable for multiple uses and safe for use on delicate surfaces and parts. We supply Corn Cob blasting grit for use on log cabins, wood, aluminum, fiberglass, buildings and boats. Available in all standard sizes on orders ranging from bags to pallets and truckloads.

For assistance with ordering, size selection and technical support, contact us at 800-262-7763.


SIZES : +8 ▪ 10/14 (#1) ▪ 14/20 (#2) ▪ 20/40 (#3) ▪ 40/60 ▪ – 80

PACKAGING: Paper Bags ▪ 40 Bags / Pallet


APPEARANCE: Granular angular particles

SPECIFIC GRAVITY: 1.0 – 1.2 gm / cu cm


Corn Cob granules are highly absorbent in drying operations (up to 5x its weight in water) and effective in clean-ups of oil spills.


Corn Cob is widely is used for vibratory finishing and polishing brass parts and casings. It is also used in rotary tumblers, however, the inside of the casings is better cleaned in vibratory operations. For more heavily tarnished or dirty metals, Walnut Shell Media may be recommended.


Corn Cob provides a smooth and even finish in log home restoration. Reclaimable & reusable, this blasting method quickly removes old stain, water marks and debris to prepare wood for new clear coats and stain.  It does an excellent job when restoring wood panels and furniture.

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