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Laban Kaduma
April 23, 2012
Rota Sludge Drilling
>
Drill Bits
>
Rock bit
What is it?
Is a rock bit it can penetrate through soft rocks and compact layers of soil
Make sure you grind from inside so that the sharpness will be to the out side
Good Things
Is that you can drill through soft rock and compact layer of soil
Bad Things
By using this type of rock bit you cannot pass the very hard rock like granite
Your Ideas
Write
any untested improvements that could
be made
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