drill bit selection
These are crappy pictures and a gfs drill I found in my dad's basement. I used a big drill so you could see it better and the grinding wheel has been abused, big corner radius. I don't have a dresser here and I just haven't gotten to it.
I use the side of the wheel to flatten the cutting lip.
it doesn't take much.
Then radius the corners and relieve them so the back of the drill doesn't rub. They don't have to be perfect, the more you sharpen the radius, the better you will get at it and your going to be redressing those radiuses alot.
These are crappy pictures and a gfs drill I found in my dad's basement. I used a big drill so you could see it better and the grinding wheel has been abused, big corner radius. I don't have a dresser here and I just haven't gotten to it.
Then radius the corners and relieve them so the back of the drill doesn't rub. They don't have to be perfect, the more you sharpen the radius, the better you will get at it and your going to be redressing those radiuses alot.