Corn Cob and Walnut Shell have been used for tumbling media and polishing media in their natural state for a very long time. As Finishing advanced with Tumbling Barrels, Vibratory Bowl Machines, Centrifugal Barrel Machines, and Spin-Finish Machines, both Corn Cob Tumbling Media and Walnut Shell Tumbling Media also known as Dry Finishing Media and Dry Polishing Media became even more popular for finishing parts, and it is Biodegradable.
Blends of Corn Cob Tumbling Media and Walnut shell Tumbling Media are now mixed with a variety of fine abrasives, using binders to hold the abrasives to the Walnut Shell and Corn Cob achieving very low Ra surface finishes, as low as 1-2 Ra.
The advantage of both Corn Cob Media and Walnut Shell media is the particle size is fine, and the media will not degrade sharp edges or any dimensional tolerances on the parts. Some typical parts that are processed with both Corn Cob Media and Walnut Shell Media are, Jewelry, Bearings, Knee Joints, Dental Tools, Brass Cases, Medical Instruments and Musical Instruments.
Blends of Corn Cob Tumbling Media are generally used on softer materials like Brass, Aluminum, Zinc, and Die Cast parts because corn cob is softer than walnut shell. You still can achieve Satin Finishes and aggressive cutting along with high lustre brilliant finishes using Corn Cob Media, with todays new blends of abrasives in corn cob media.
Blends of Walnut Shell Media are generally used on the harder materials like, Stainless Steel, Cobalt Chrome, Titanium, and other exotic materials. The same types of finishes can be achieved on these harder materials using Walnut Shell Media.
For more information on Corn Cob Tumbling Media go to www.technifinish.com
Or Call 1-269-207-3037
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