Blade 1512 (bright steel) for wood
Blade 1513 (blue) for soft metals (brass, etc.)
Blade 1514 (tan - grey) for steel, other hard materials, and mica in commutators
haf
https://haf.myturn.com/library/
89 Lexington Avenuehttps://haf.myturn.com/library/
Albany, NY, 12206
USA