Sharpening drill bit question

[Mickey]

How do you folks sharpen the over-sized drill bits like the 33,35 and 37/64. They will not fit the Drill Doctor so what's to be done?

 

[lwalden]

there is a drill doctor that will work with bits between 1/2" and 3/4"..... but FYI, I send Paul Huffman (manufacturer of the highly regarded Paul Huffman center drilling vise) my pen mill cutter heads for sharpening, and he's sharpening my Norseman bits for me as well.

 

[NewLondon88]

Depending on the version of Drill Doctor, there is an oversized chuck
(replacement for the 750X chuck) that may fit in your machine