The Weekend Joiner

There are five cures for tearing:

  1. Reverse the direction of planing.
  2. Sharpen the blade.
  3. Take a very fine cut.
  4. Set the cap iron very close.
  5. Close up the mouth.

Anyone of these or a combination of any number of them will prevent tearing. On the other hand, too close a cap iron and too fine a mouth will cause “clogging.” It is always worth examining the mouth as this may be poorly formed or obstructed by a blob of paint, which can be removed by gentle filing.

– Robert Wearing’s “The Essential Woodworker”