Thanks for the info,I will check some of those out.
After being on the forums for many years I can sorta figure out who's blowin smoke up my tailpipe

,I just let it pass..
I have never realy built any blades,just kinda refurbed some ,polishing and trying to grind a decent edge.The polishing part I'm ok with,its the edge ginding that gets me.
Hollow ground, bevel ground and so forth,sounds greek to me.