Porter-Cable 557 Instruction Manual page 15

A
B
C
Fig. 18 Fig. 18A
ATTACHING DUST BAG
Depress spring clips (A) Fig. 18, and clip dust bag (B) on end of
dust/chip deflector (C).
The bag is equipped with a zipper to ease emptying
of the collected material.
Vacuum Hose
A standard 1" vacuum hose can be attached to the dust port to provide a
means for connecting the tool to your vacuum cleaner or dust collection
system.
"DUPLEX" HINGES
The 557 can be used to make the mortises required for installing "duplex"
hinges. To accomplish this, you must make a spacer and attach it to the 557
fence. The spacer can be made of scrap 3 " thick wood. Cut the spacer to
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approximately 3 3 " by 5 1 ", and attach it to the fence with two 3 " long wood
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8 4 4
screws (see Fig. 18A).
#6 BISCUITS
With the 4" blade installed, set the depth adjusting turret to the MAX
position. Two cuts will be required to produce each groove for a #6 biscuit.
The centerlines of these two cuts should be spaced 1 " apart. When laying-
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out these cuts, mark the first cut centerline, move over 1 " and mark the
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second cut centerline.
POSITIONING GROOVES
The number of grooves (biscuits) used in a joint may be varied to provide the
strength required for the particular application. Typically, the center of the
first groove is positioned approximately two inches from the edge of the
work with additional grooves spaced at three to six inches on centers.
In most cases, one line of grooves (biscuits) positioned approximately along
the centerline of the material is used. On thicker material, an additional row(s)
of biscuits may be used for added strength. The possibilities are almost
endless.
Position the two workpieces (to be joined) in the relationship desired after
joining. Mark the centerline of each groove required as shown in Fig. 19. Use
a square to assure accuracy.
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