Shopsmith 555970 manual until you’ve completed the first 1/8 deep pass

555970 MARK V – MOUNTED OVERARM PIN ROUTER

For most applications, we recommend using a 3/8" diameter Guide Pin.

IMPORTANT: The distances between your template segments must remain exact, all the way around its perimeter. Any variations here and your fixture will not function properly.

4.Set up your Overarm Router for fix- ture-making – For most projects, we rec- ommend using a 3/8" Guide Pin and a matching 3/8" carbide-tipped straight router bit. Align the Pin and bit exactly with one another as shown in Figure 8. Adjust the Overarm Router’s Depth Stop Rod to make a cut 7/16" deep (remember . . . the Guide Pins are 3/8" high). Lower your see-through Guard to about 1/2" above the fixture surface. At- tach your dust collection hose to the port.

5.Cut the outside groove first – With the router motor turned off, position your fixture blank on the Overarm Router’s Table...laminate side up and template side down. Move the outside edge of your template forward until it rests sol- idly against the Guide Pin.

Turn on your router (and dust collec- tor) and slowly lower the rotating bit into the top of your fixture. Lock the Depth Control Handle into position and make an initial cut about 1/8" deep. Ro- tate your workpiece slowly and cau- tiously in a counter-clockwise direction (Against the rotation of the bit) – being careful to maintain a steady, even pres- sure against the Table Pin at all times

– until you’ve completed the first 1/8" deep pass.

Repeat the process above two more times, until you’ve created a guide groove in the laminate side of your fix- ture that’s 7/16" deep.

6.Cut all remaining guide grooves – Fol- low the same procedures outlined in step #5 above. Remove the template pieces from the particleboard side of the fixture.

7.SCREW-DOWN FIXTURES – Drill your mounting screw pilot holes through the laminate side of your fix- ture, being sure to countersink your screw heads well below the surface.

CLAMP-IN FIXTURES – Attach sides around the perimeter of your fixture (protruding above the surface of the fix- ture, but not quite as high as your workpieces will be thick). For durabil- ity, use oak, maple or similar hard woods for the sides and clamping bar. Before attaching the side you select to contain your clamp-down thumbscrews, insert ordinary drive-in, threaded T- Nuts from the INSIDE of your frame piece. Cut a straight, wooden clamping bar to fit inside the perimeter. Once as- sembled, tightening the thumbscrews will press the clamping bar against the blank workpiece, holding it in position while you cut out your shape. See Fig- ure 15.

Figure 15. Construction of a typical

clamp-in fixture

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