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Cattle Boards
Trucks, Tractors & Machinery
whats a good speed for drilling metal?
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<blockquote data-quote="dj" data-source="post: 276176" data-attributes="member: 1795"><p>The bit is carbide(not cheap). Maybe burning up was the wrong term but it does start heating up even with an oil drench. Have been doing a little and letting it set for awhile and going back to it. But I can't get a good spiral of cut material like the old blacksmith who was gracious enough to let hang out in his shop 30 years ago. He started drilling something and it cut just just a long curled piece. Kinda like peeling an apple with the peel in one piece. Looked at Grizzley's site they have some that go down to 190 rpm.</p></blockquote><p></p>
[QUOTE="dj, post: 276176, member: 1795"] The bit is carbide(not cheap). Maybe burning up was the wrong term but it does start heating up even with an oil drench. Have been doing a little and letting it set for awhile and going back to it. But I can't get a good spiral of cut material like the old blacksmith who was gracious enough to let hang out in his shop 30 years ago. He started drilling something and it cut just just a long curled piece. Kinda like peeling an apple with the peel in one piece. Looked at Grizzley's site they have some that go down to 190 rpm. [/QUOTE]
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whats a good speed for drilling metal?
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