Fig. 36. wedge, its tendency is to follow the back of the planeiron as at A, Fig 36. As seen at A, Fig. 37, the backiron prevents this, by changing its course and breakingit before it has time to split down into the wood.The single iron does very good work so long as thegrain is favorable, but when… … Fig. 37. board that is cross-grained, as at B, the shaving willsplit ahead of the cutting iron and leave the surfacerough. APPENDIX 191 Fig. 38 shows the wood plane and and the advantageof a narrow mouth, which the iron plane shown by Fig.37Jacks. This, too, changes the direction of the shav-ing.…
Patternmaking
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