Using a Jointer (continued)
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Edge Jointing Problem Stock
Figure 6-9. (A) The concave edge of a dished board can be straightened by making several light cuts. (B) When a board has an uneven edge, joint the opposite edge first. Next rip cut the uneven edge, then joint.
Stock with knots, "wild grain," or extensive figuring is always difficult to joint; therefore, it requires extra care. For best results, feed the stock slowly and take very light cuts. Warning: Be especially cautious of kickbacks and stop cutting immediately if the stock will not feed smoothly.
Whenever possible, stock that is distorted like the piece shown in Figure 6-9A should be jointed on the dished edge first. This is to provide adequate bearing surface for the jointing cuts that will produce one even edge so the stock may be ripped parallel on the table saw.
Warning: Use extra care when a curved edge must be jointed, since only a small area of the edge will bear on the table surface. The first pass will provide a flat area that will facilitate subsequent passes.
Stock having one uneven edge, as shown in Figure 6-9B, is handled by jointing the one straight edge first. This edge rides against the rip fence and is rip cut to remove the uneven edge; then the rip cut edge is jointed.
These guidelines apply to stock that has minor edge imperfections. Warning: Don't waste time on badly distorted material. It can be dangerous and you may not have much material left after the distorted areas are removed. It's a good rule to joint only good lumber.
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