Paragraph 9. In boring a hole through a piece of material which is likely to have both sides subject to view, it is necessary to take some precaution to prevent the bit from splintering the wood when it comes through the board. This splintering can be avoided by placing a scrap of material back of the board and boring through the board into the scrap, as shown in Figure 26. Another plan is to bore almost through from the face side, and just as the point of the bit begins to show on the opposite side, remove the bit and start on the opposite side, making sure that the bit point starts exactly in the tiny hole which it has formed while boring from the other side.

Figure 26.