Machine Use - Delta JT160 Manual De Instrucciones

MACHINE USE

The following directions will give the beginner a start on jointer operations. Use scrap pieces of lumber to check the
settings and to get the feel of the operations before attempting regular work.
NOTE: The knives on the jointer will not wear evenly by feeding the wood through the same spot on the table
every time. Feed the wood through the jointer at different spots on the table to help eliminate uneven wear of
the knives.
Always use cutterhead guard and keep hands away from cutterhead. Use push blocks whenever
possible.
DEFINITION OF JOINTING, PLANING
Fig. 37A
1. JOINTING OPERATIONS – Jointing cuts or
edge jointing are made to square an edge of a
workpiece. The workpiece is positioned on the
jointer with the narrow edge of the workpiece
on the infeed table and the major flat surface of
the workpiece against the fence, as shown in Fig.
37A. The workpiece is moved from the infeed
table, across the cutterhead to the outfeed table.
PLACEMENT OF HANDS
DURING FEEDING
At the start of the cut, the left hand holds the work
firmly against the infeed table and fence, while the right
hand pushes the work toward the knives. After the cut
is un der way, the new surface rests firmly on the outfeed
table as shown in Fig. 38. The left hand should then be
moved to the work on the outfeed table, at the same
time maintaining flat contact with the fence. The right
hand presses the work forward, and before the right
hand reaches the cutterhead it should be moved to the
work on the outfeed table.
Never pass hands directly over the
cutterhead.
JOINTING AN EDGE
This is the most common operation for the jointer. Set
the guide fence square with the table. Depth of cut
should be the minimum required to obtain a straight
edge. Hold the best face of the piece firmly against the
fence throughout the feed as shown in Fig. 37A.
Do not perform jointing operations on
material shorter than 10 inches (254 mm), narrower
than 3/4 inch (19 mm), or less than 1/2 inch (12.7
mm) thick (refer to Fig. 39).
2. PLANING OPERATIONS – Planing or surfacing
are identical to the jointing operation except for
the position of the workpiece. For planing, the
major flat surface of the workpiece is placed on the
infeed table of the jointer with the narrow edge of
the workpiece against the fence, as shown in Fig.
37B. The workpiece is moved from the infeed table,
across the cutterhead to the outfeed table. Use
push blocks when performing planing operations
whenever possible.
OUT-FEED
TABLE
MINIMUM JOINTING DIMENSIONS
1/2" (12.7 mm)
MIN I MUM
16
Fig. 37B
MATERIAL
IN-FEED TABLE
CUTTER
Fig. 38
3/4" (19 mm) MIN I MUM
Fig. 39