Delta 37-380 Instruction Manual download pdf (Page 23)

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. 67, 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. 68).

DIRECTION OF GRAIN

Avoid feeding work into the jointer against the grain as

shown in Fig. 69. The result will be chipped and

splintered edges. Feed with the grain as shown in Fig.

70, to obtain a smooth surface.

Fig. 67

Fig. 68

MINIMUM AND

MAXIMUM SURFACING

DIMENSIONS

Fig. 69 Fig. 70

After considerable use, the knives will become dull and it will not be possible to do accurate work. Unless

badly damaged by running into metal or other hard material, the knives may be sharpened as follows:

WHETTING KNIVES

DISCONNECT MACHINE FROM POWER

SOURCE.

Use a fine carborundum stone, cover it partly with paper

as indicated in Fig. 71 to avoid marking the table. Lay

the stone on the infeed table, lower the table and turn

the cutterhead forward until the stone lies flat on the

bevel of the knife as shown. Hold the cutterhead from

turning, and whet the beveled edge of the knife, stroking

lengthwise by sliding the stone back and forth across

the table. Do the same amount of whetting on each of

the three knives.

Fig. 71

MAINTENANCE AND REPAIRS

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Delta 37-380 Instruction Manual Page 23

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