By planing the ends before the width is planed, the danger of splitting off fragments can be avoided by chiseling the corner of the unfinished edges, C, _a_, and D, _b_, Fig.

103, into a buttress.
By planing the ends and the width before the thickness is planed, a dressed face is secured all around for gaging the thickness.

In following this order all measurements and markings are made on a dressed face.
[Illustration: Fig.104.Sighting for Wind.] If there be any "wind" or twist in the board, this should be discovered first of all.

This may be done roughly by sighting across the broad side of the board, Fig.

104, and more accurately by the use of "winding sticks," see Fig.