Jet JPJ-12B Operating Instructions And Parts Manual page 21

Direction of Grain
Avoid feeding work into the jointer against the
grain (Figure 29). This may result in chipped and
splintered edges.
Figure 29
Feed with the grain to obtain a smooth surface,
as shown in Figure 30.
Figure 30
Jointing
Jointing (or edging) is the process of creating a
finished, flat edge surface that is suitable for
joinery or finishing (Figure 31). It is also a
necessary step prior to ripping stock to width on
a table saw.
 Never edge a board that is less than 3" wide,
1/4" thick, or 12" long without using a push
block.
 When edging wood wider than 3", lap the
fingers over the top of the wood, extending
them back over the fence such that they will
act as a stop for the hands in the event of a
kickback.
 Position the fence (move it forward) to
expose only the amount of cutterhead
required.
When workpiece is twice the
length of the jointer infeed or outfeed table,
use an infeed or outfeed support.
To edge:
1. Make sure the fence is set to 90°. Double-
check it with a square.
2. Inspect stock for soundness and grain
direction (refer to Direction of Grain).
3. If the board is bowed (curved), place the
concave edge down on the infeed table.
4. Set the infeed table for a cut of approx-
imately 1/16".
5. Hold the stock firmly against the fence and
table, feed the stock slowly and evenly over
the cutterhead.
Beveling
Beveling an edge is the same operation as edge
jointing, except that the fence is tilted to a
specified angle.
 Make sure the material being beveled is more
than 12" long, 1/4" thick, and 1" wide.
To bevel:
1. Use a bevel gauge to determine the desired
angle. Then set the fence to the same angle.
2. Inspect stock for soundness and grain
direction (refer to Direction of Grain).
3. Set the infeed table for a cut of approximately
1/16".
4. If the board is bowed (curved), place the
concave edge down on the infeed table.
5. Feed the stock through the cutterhead,
making sure the face of the stock is
completely flat against the fence and the
edge is making solid contact on the infeed
and outfeed tables (Figure 32).
For wood more than 3" wide – hold with
fingers close together near the top of the
stock, lapping over the board and extending
over the fence.
For wood less than 3" wide – use beveled
push blocks and apply pressure toward the
fence. Keep fingers near top of push block.
21
Figure 31