In July 2002, I sent an email to Greenlee about touching up ship augers [They’ve probably been making them for ~100 years] and heard back from them overnite. Their answer was almost unbelievable…

"We do not recommend sharpening our tools. There are no instructions for doing so."

Earlier E-C.net posts on sharpening— https://www.electrical-contractor.net/ubb/Forum1/HTML/001262.html https://www.electrical-contractor.net/Forum/Images/Auger_Sharpening.jpg

and https://www.electrical-contractor.net/ubb/Forum1/HTML/003331.html