Vise Mechanism

To drive the sliding runners in and out, a pair of hand wheels turn threaded rods.

The top is screwed to a pair of vise mechanisms. Each vise has a threaded rod that "drives" a sliding runner in and out of a guide unit, refer to N^ Fig. 24 on the next page. To get a good fit, I built the vise from the inside out. starting with the runners.

plugs augn runner halves while clamping

aux. NOTE:

FENCE USE SAM£

aux. NOTE:

FENCE USE SAM£

dado blade for fig. 15

hand wheels. The liaiidwheels start out as square blanks with two holes drilled in each—one hole for a handle and one for the rod, see Fig. 18. Next, cut a shallow kerf across each blank for a cross pin. (The cross pin locks the handwheel on the rod.)

Now, the handwheels (O) can be cut round and the edges softened. For handles, glue a dowel in each handwheel, see Fig. 18.

threaded rod. Next, the rods can be cut to size, see Fig. 19. Shop Tip: Before cutting the rod, thread a nut beyond the intended cut line. Removing the nut after the rod is cut will repair any damaged threads.

With the rod cut to size, drill a hole in it for the cross pin (6d common nail), see Fig. 19. To help the bit get started, I filed a flat spot near the end of the threaded rod.

handwheel assembly. Attaching each handwheel is a three-step process. First, the handwheel is locked on the end of each rod with a cap nut and the cross pin, see Fig. 19. Next, slip three nylon spacers and the front runner on the rod, and secure them with a washer and lock nut, see Fig. 20. Finally, the front runner can be screwed inside the front end of the guide unit, see Fig. 21.

sliding runner assembly. Finally, it's time to install the sliding runner, see Fig. 24. But the sliding runner won't work until it's connected to the threaded rod. To connect them, I added a cross dowel with a threaded insert, see Fig. 24a. As the rod turns, this dowel drives the runner in and ouL

To do this, I drilled a hole through the runner, see Fig. 22. Then I mounted a threaded insert into a dowel, see Fig. 23.

Shop Note: If you file or cut a flat surface on the dowel, then youll reduce the amount of tear out when installing the insert.

After the dowel is cut, set it in the hole (flat side facing back), see Fig. 24. Then slide the runner in, turning the handwheel until the rod engages the insert. Uoint or sand the sides of the runner if it fits too tighL)

HANDWHEEL

HANDWHEEL

CUT v X v KERF ACROSS BACK OF BLANK

NOTE: RUNNER SHOULD BE FLUSH WITH END OF GUIDE UNIT

CUT v X v KERF ACROSS BACK OF BLANK

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