The mouth is an important area to get flat with the rest of the plane, at least the front portion of the mouth. The shavings need to follow a course to the chip breaker and out the top without any interference. We are only talking about thousandths of an inch, but when a shaving is .001 or thinner it may make a difference. Keep flattening it and see where you wind up. Don’t about the very front, back, or the sides of the sole too much. As much as an 1/8″ (4 mm) of margin is ok.
- This reply was modified 4 years ago by Ross Hollinger.