Quote:
Originally Posted by DampRobot
Second, what drill size is the "right" size for 3/16" rivets? On our team we've used everywhere from 3/16" (fractional) drill bits to #6 number bits. The #8-6 bits are nice because they're also clearance for 10-32 screws, but they also produce loose fits for the rivets, which can sometimes make out frames wobbly. Is there a correct size (or at least best size) for 3/16" rivets in FRC?
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We use a #9 Drill (.196) for anything 3/16 or #10 hardware related. It's recommended on many drill charts for a #10 clearance hole, including the Solidworks "Close" fits. Gives a nice close fit, but still just loose enough to allow fasteners to easily go through. Going much bigger just seems to make the assembly less precise, especially if you rely on the rivets for location.