Bosses are used in parts that will be assembled with inserts, self-tapping screws,
drive pins, expansion inserts, cut threads, and plug or force-fits. Avoid stand-alone
bosses whenever possible. Instead, connect the boss to a wall or rib, with a connecting rib as shown in Figure 31. If the boss is so far away from a wall that a connecting rib is impractical, design the boss with gussets as shown in Figure 32.
Figures 33 and 34 give the recommended dimensional proportions for designing bosses at or away from a wall. Note that these bosses are cored all the way to the bottom of the boss.
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