The Collaborative International Dictionary of English v.0.48:

Saw-set \Saw"-set`\, n.
   An instrument used to set or turn the teeth of a saw a little
   sidewise, that they may make a kerf somewhat wider than the
   thickness of the blade, to prevent friction; -- called also
   saw-wrest.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Saw-wrest \Saw"-wrest`\, n.
   See Saw-set.
   [1913 Webster]