on the edge. Take your combination coa rse-and-fine carborundum stone, and set it on the bench with the smooth lace up. Apply a few drops of oil to center of stone. Hold the plane bit in both hands as in Figure 30, with the heel of bevel resting on the stone, as in "A," Figure 31. Now slowly lift the upper end of bit, tilling it forward until you feel the edge touch the stone, and the oil squeezes out in front of this edge. Figure 31-B. The heel of bevel is thus very slightly lifted from the stone, so that only the edge will be sharpened. Maintaining a firm but nor too heavy pressure,
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