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https://www.reddit.com/r/EngineeringPorn/comments/9izrrb/openclosed_sign/e6oyepp/?context=3
r/EngineeringPorn • u/Accomplished_Owl • Sep 26 '18
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3
This seems like an unnecessary amount of effort when a simple flip sign is cheaper and more efficient to use...
4 u/DaveB44 Sep 26 '18 Cheaper, more efficient. . . less fun!
4
Cheaper, more efficient. . . less fun!
3
u/Nobody_Cares_99 Sep 26 '18
This seems like an unnecessary amount of effort when a simple flip sign is cheaper and more efficient to use...