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New Edge Cobras
Drilling through metal for broken bolt on control arm using a cobalt bit not working
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<blockquote data-quote="SonicDTR" data-source="post: 16438846" data-attributes="member: 64345"><p>I had to drill my super duty frame a while back and did some reading because it was a nightmare at first. From what I found, using nothing is better than an improper fluid such as wd40, penetrating lube, or oil. Even water is a better choice for drilling hardened steel than any of those. Sure enough, I just used a spray bottle of water to clean it out and took breaks to keep the bit cool and it worked much better. By design, most oils prevent the bit from actually cutting.</p></blockquote><p></p>
[QUOTE="SonicDTR, post: 16438846, member: 64345"] I had to drill my super duty frame a while back and did some reading because it was a nightmare at first. From what I found, using nothing is better than an improper fluid such as wd40, penetrating lube, or oil. Even water is a better choice for drilling hardened steel than any of those. Sure enough, I just used a spray bottle of water to clean it out and took breaks to keep the bit cool and it worked much better. By design, most oils prevent the bit from actually cutting. [/QUOTE]
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Drilling through metal for broken bolt on control arm using a cobalt bit not working
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