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Can you tell me more details about hardening and tempering that cutter?
(That raises another question for me...and hopefully I'm not hijacking things...)I recently modified an HSS cutter. All I did was grind, file, and sharpen. No hardening or tempering.Anything wrong with that?
Did you harden and temper because you used tool steel? (And I'm not sure what the difference is between HSS and tool steel.)
Question...what are you doing for lighting when you take pictures? I've really struggled getting decent pics.
Nice work on the pump! As I recall, that counterbore above the threads is for an o-ring to seat in, to seal up the top plug piece.