THE YOUNG FARMER'S MANUAL. 

 FlG. 155. 



391 



SHAPE OF THE EDGE OF THE JOINTER IRON. 



corners, it will work well, and the plane ridges will be hardly 

 perceptible. In order to plane smooth, the irons must be as 

 straight on the edge as they can be, and not make a square cut 

 at their corners, for if they do they are very liable to choke 

 or clog. In order to plane well, the edge must cut like a razor. 

 (See OIL-STONE, Par. 565.) 



ADJUSTING THE PLANE BITS 



573. Requires considerable skill in order to do it just right 

 when it is done with a wedge. There are in limited use several 

 patent arrangements for adjusting plane bits, but they increase 

 17 



