Good old structural drawing lol...these large scales are simply amazing...ive done more then a thousand small scales when i was in art school. Its actually still 2D tho

.... "3D" would b viewing real life. Even 3D modeling like auto cad programs is actually still 2D becuase ur viewing on a flat plane (screen)...illusions illusions lol...gotta love the brain. Had to be a cynic sorry...its my profession. U can catch a guy making these drawings on a pbs special every once in a while, very cool topic op! Agreed stupid to use chalk!!! All that work for nothing
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