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<p>[QUOTE=&quot;springfld.arsenal, post: 237083, member: 54&quot;]I bought 200 lbs of little beads, 2nd hand, thinking they might be porcelain media.&nbsp; Media in this sense are masses of small, hard, identical pieces used in tumbling or vibratory finishing of metals.&nbsp; Porcelain beads are the preferred hard media for vibratory finishing of brass.&nbsp; Our vib finishing machine is a &quot;Mr.&nbsp; Deburr&quot; that needs over 100 lbs. of hard media to cycle correctly, and at say $5 a pound, retail porcelain has always been too costly.&nbsp; That&#039;s why I&#039;m hoping these off-white, dull (matte appearance) 4mm diameter balls are porcelain, not ceramic or other material.&nbsp; The seller was not original owner and had no idea beyond &quot;media.&quot;&nbsp; Anyone know?&nbsp; Would a photo help?[/QUOTE]</p><p><br /></p>

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