Quote:
Originally Posted by AlecS
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.
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The danger here is for teams that may not be placing ALL their holes across all parts precisely. Some teams may need the larger hole size for the frame to even have a chance of lining up.
I don't at all disagree with what you're saying if a team is capable of it, but no shame in oversizing holes if it's what you have to do it get the frame to happen.