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<p>[QUOTE=&quot;Oldhoopster, post: 5292790, member: 84179&quot;]There are all kinds of media that can be used.&nbsp; You can get everything from ground corncobs, to sodium bicarbonate (also good for heartburn <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie103" alt=":yack:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie53" alt=":hungover:" unselectable="on" unselectable="on" />), to submicron aluminum oxide.&nbsp; The stuff you can use is endless.&nbsp; Not everything is 100 grit corundum sandpaper.</p><p><br /></p><p>I always wondered about trying things like fabric or saw dust and hard rubber balls.&nbsp; Throw something in the tumbler that mimics natural wear conditions and as &quot;Ronco&quot; Ron Popeil used to say, &quot;set it and forget it&quot;.&nbsp; Tumble for a few months, checking occasionally.&nbsp; I&#039;m half tempted to buy a used laboratory jar mill and try it myself.</p><p><br /></p><p>I used to grind/mill 25,000 lbs of ceramic raw material a day.&nbsp; It&#039;s not rocket science.&nbsp; I&#039;m sure somebody has figured out how to get natural looking wear patterns.&nbsp; I think the harder trick is to get the toning/patina to look like an old worn coin after tumbling.&nbsp; But then again, Better Living through Chemistry <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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