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Cattle Boards
Trucks, Tractors & Machinery
whats a good speed for drilling metal?
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<blockquote data-quote="Saltydawg" data-source="post: 276778" data-attributes="member: 2944"><p>I'll just throw my 2 cents in backing up what others have already said.</p><p></p><p> Grade 5 bolts are pretty strong but they aren't as hard as most drill bit metal is.</p><p> Sounds like your bits are ground/cut wrong or just plain dull and chipped. They should cut into a grade5 bolt without much trouble.</p><p></p><p> If you're actually cutting, which your bit should be, there shouldn't be a lot of excessive heat at those rpm's.</p></blockquote><p></p>
[QUOTE="Saltydawg, post: 276778, member: 2944"] I'll just throw my 2 cents in backing up what others have already said. Grade 5 bolts are pretty strong but they aren't as hard as most drill bit metal is. Sounds like your bits are ground/cut wrong or just plain dull and chipped. They should cut into a grade5 bolt without much trouble. If you're actually cutting, which your bit should be, there shouldn't be a lot of excessive heat at those rpm's. [/QUOTE]
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whats a good speed for drilling metal?
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