The Sawyer’s Companion; Or, Instructions for Using and Choosing Both Long and Circular Saws. E-book. Formato PDF Sandford E. Parsons   -  Forgotten Books, 2017  - 

A poor mill, with a well fitted saw, not unfrequently produces more net profit, than a good one with a badly fitted saw. The latter requires double power, and is therefore subjected to double wear and tear, besides making an inferior quality of lumber. Sometimes a saw will bear double the feed that it will at other times, and will work with as much ease, as every Sawyer knows.