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Old 18th Aug 2018, 9:48 am   #65
ms660
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Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
Default Re: Show us your drills!

The old mining drills were nothing like that Rawl drill, not in hardrock mining anyways, they were splayed chisel head which helped with chip removal, basically the same as the modern ones except that the modern ones have tungsten carbide inserts.

Lawrence.
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