Delta JT160 Manuel d'instructions télécharger pdf (Page 16)

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.

Fig. 37C

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-

derway, the new surface rests firmly on the outfeed table

as shown in Fig. 37C. 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. 38.

DO NOT PERFORM JOINTING OPERA-

TIONS 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).

Fig. 39

OUT-FEED

TABLE

IN-FEED TABLE

CUTTER

MATERIAL

3/4" (19 mm) MINIMUM

10" (254 mm) MINIMUM

MINIMUM JOINTING DIMENSIONS

1/2" (12.7 mm)

MINIMUM

MACHINE USE

Fig. 37A

Fig. 37B

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.

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.

DEFINITION OF JOINTING, PLANING

1 2 ... 11 12 13 14 15 16 17 18 19 20 21

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Delta JT160 Manuel d'instructions Page 16

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