Paragraph 18. It is very necessary that the laying out for dowel boring should be absolutely correct, otherwise the two edges will not join perfectly when the assembling is attempted. The edges to be joined with dowels should be carefully gauged with the marking gauge. After determining the distance apart which the holes are to be, a line should be squared across both boards at one operation in the manner shown in Figure 35. To do this, fasten the two pieces in the vise with their gauged edges even. With the try-square and lead pencil square lines entirely across both edges. In boring the holes be sure that the bit point starts exactly where the pencil line crosses the gauge line. The boring should be done as indicated in Figure 30 in this chapter.

Figure 35.