Shopsmith 555970 manual External edges, Internal edges

555970 MARK V – MOUNTED OVERARM PIN ROUTER

•The hardness of the stock you’re cutting. If you’re working with hard maple, oak, ash, cherry, hickory or other tough stock, it may be necessary to make two or three passes to produce your full profile with- out burning or tear-out.

Performing these operations is basically the same, whether you’re cutting an external edge or an internal edge.

External edges

1.Set up your Overarm Router, following the “General guidelines for overarm routing” on page 18 in the front section of this Manual and install the Bit of your choice.

2.With your router motor turned off, move the workpiece next to the Bit and adjust your up-down depth-of-cut

NOTE

In some cases, your lateral depth-of-cut must also be adjusted to produce the pro- file you desire. In the case of a bearing-pi- loted Bit, this is accomplished by chang- ing the size of the bearing. Most Bit manu- facturers offer a variety of bearing pilots with the same I.D. (internal diameter) and differing O.D.’s (outside diameters). With

asolid-piloted Bit, the lateral depth-of-cut cannot be altered.

3.Screw the 1/4" diameter Starter Pin into the threaded Starter Pin hole in the Pin Routing Table Insert and tighten it se- curely.

4.Move the workpiece away from the Bit area, turn on the motor and lock every- thing in position to make your first pass. Resting the external edge of your workpiece against the Starter Pin, ease it gradually into the rotating Bit to start

your cut. When the Bit pilot contacts the workpiece edge, gradually rotate the workpiece off the Starter Pin and con- tinue to move the workpiece against the rotation of the bit, pushing steadily against the Bit Pilot, which now serves as your guide. (See Figure 24). If a sec- ond pass is required, repeat the proce- dure until the desired profile is achieved.

Figure 24. Cutting a decorative external edge on an oval picture frame using a solid pilot router bit.

Internal edges

To decorate the internal edges of projects, fol- low steps one through three, as outlined above . . . then move to step four below.

4.Move the workpiece away from the Bit area, turn on the motor and lock every- thing in position to make your first pass. Resting the internal edge of your workpiece against the Starter Pin, pull it against the Pin. Maintain a steady pulling force against the starter pin un- til the Bit pilot contacts the workpiece edge, then move it gradually off the Starter Pin and against the rotation of the Bit, as its pilot takes over as your guide. If additional passes are required, repeat this procedure until the desired profile is achieved.

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