I like a hollow ground screwdriver tip.
  Only the hollow grind is shallow and extends a --long-- way.
   Its a very long barely hollow ground bevel, that might be confused 
with a flat ground tip.
  But it really isn't.

http://users.snowcrest.net/kitty/sgrandstaff/images/hometools/ph2.jpg
http://users.snowcrest.net/kitty/sgrandstaff/images/hometools/ph5.jpg
http://users.snowcrest.net/kitty/sgrandstaff/images/hometools/ph7a.jpg
yours scott

-- 
*******************************
    Scott Grandstaff
    Box 409 Happy Camp, Ca  96039
    scottg@s...
    http://www.snowcrest.net/kitty/sgrandstaff/
    http://www.snowcrest.net/kitty/hpages/index.html