Things you only do ONCE!

[Oblarg]

73. Unplug the robot while downloading code. Before a match.
74. Set-screw hubs on a hardened-steel shaft.
75. Set-screw shaft collar on the end of a lead-screw (well, that certainly did a whole lot...)
76. Set-screws in general where clamping hardware is possible.
77. Bolts without locknuts/lockwashers/loctite on a robot with mecanum
78. Entire robot frame made of 80/20.
79. Driving the robot (with an electronics board made of acrylic) smack into a wall on your first time touching the controls (board split clean in two - ironically, I ended up being driver at competition two years later).