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General

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  • What is the process for sending an invention or idea to someone for consideration?
  • What does the 'Bi-Metal' mean when referring to a utility blade?
  • When would I use a tap and die set and how would I properly use them?
  • When would I use a tap and die set and how would I properly use them?
  • How do you sharpen your 1" speedbor ship auger bit ?
  • How do I resharpen Irwin auger bits?
  • Are Irwin cobalt alloy steel drill bits coated like the titanium ones? If the cobalt bits are rockwell hardness 66 - 67 HRc, what hardness are the titanium bits? Once you sharpen a cobalt bit and the gold coating is gone, is it just a regular bit?
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