Delta DJ-15 Instruction Manual download pdf (Page 19)

TAPER CUTS

One of the most useful jointer operations is cutting an edge to a taper. This method can be used on a wide variety of

work. Tapered legs of furniture are a common example. Instead of laying the piece on the infeed table, lower the

forward end of the work onto the outfeed table. Do this very carefully, as the piece will span the knives, and they will

take a “bite” from the work with a tendency to kick back unless the piece is firmly held. Now push the work forward

as in ordinary jointing. The effect is to surface off all the stock in front of the knives, to increasing depth, leaving a

tapered surface. The ridge left by the knives when starting the taper may be removed by taking a very light cut

according to the regular method for jointing, with the infeed table raised to its usual position. Practice is required in this

operation, and the beginner is advised to make trial cuts on waste material. Taper cuts over part of the length and a

number of other special operations can easily be done by the experienced craftsman.

CUTTING A RABBET

When making a rabbet cut, as shown in Fig. 48, the cutter-

head guard must be removed.

AFTER THE RABBET CUT IS COMPLETED,

BE CERTAIN GUARD IS REPLACED.

1. Adjust the fence so that the distance between the

end of the knives and the fence is equal to the width of

the rabbet.

2. Lower the infeed table an amount equal to the depth

of the rabbet. If the rabbet is quite deep, it may be

necessary to cut it in two or more passes. In that event,

the table is lowered an amount equal to about half the

depth of the rabbet for the first pass, then lowered again

to proper depth to complete the cut.

Fig. 48

SURFACING WARPED PIECES

If the wood to be surfaced is dished or warped, take

light cuts until the surface is flat. Avoid forcing such

material down against the table; excessive pressure will

spring it while passing the knives, and it will spring back

and remain curved after the cut is completed.

SURFACING SHORT

OR THIN WORK

WHEN SURFACING SHORT OR THIN

PIECES, ALWAYS USE PUSH BLOCKS TO MINIMIZE

ALL DANGER TO THE HANDS. Fig. 49, illustrates using

the Delta Push Blocks properly.

DO NOT PERFORM SURFACING

OPERATIONS ON MATERIAL SHORTER THAN 10

INCHES, NARROWER THAN 3/4 INCH, WIDER THAN

8 INCHES, OR LESS THAN 1/2 INCH THICK (REFER

TO FIG. 50).

Fig. 49

Fig. 50

MINIMUM AND

MAXIMUM SURFACING

DIMENSIONS

1 2 ... 14 15 16 17 18 19 20 21 22 23 24

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Delta DJ-15 Instruction Manual Page 19

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