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Chapter 10 Projects 299
9. Pull up slightly on the aluminum rod so it’s not hitting your work surface. Use
your Allen key set to tighten the set screw in the lowest shaft collar. At this
point, the shaft collar is resting on the thrust bearing and attached to the
aluminum rod, so you should be able to spin the rod.
10. Lift the next shaft collar from the bottom up with the gear to about the
halfway point inside the base. Tighten the set screw. This shaft collar will be
attached to the gear with epoxy putty later, but do not do this yet.
11. Secure the top sleeve bearing with the top shaft collar, as shown in Figure 10-14.
FIGURE 10-14 Top sleeve bearing secured with shaft
collar under the top disk
