Why Are I-Beams Shaped Like an I?
Real Engineering's video on the second moment of area explains I-beam shapes and shows where to remove plastic from a 3D print without losing stiffness.
You can save yourself some plastic if you know the theory behind the I-Beam and the Real Engineering channel on YouTube explains why I beams are shaped like they are. It explains the second moment of area (sometimes referred to as the area moment of inertia).
