Summary Parametric Bridge used to demonstrate bridge truss design and strength of materials. Students can design their own bridge in the customizer app. I recommend Width=1" Height=1" Thickness=.1" Distance 1 & Angle 1 correspond to the placement and angle of the first cross member. Negative angles can be used. Print Settings Printer: Flash Forge Rafts: No Supports: No Resolution: .3 mm Infill: 10% Notes: Rotate the bridge 90 degrees along the long axis so that you don't have to use supports. How I Designed This This was designed in OpenScad.