Customized version of https://www.thingiverse.com/thing:2922338

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=2922338

Using the following options:

do_you_understand = 1
tower_stories = 12
tower_first_story_temperature = 185
tower_per_story_temperature_change = 5
tower_story_height = 10
bridge_count = 2
bridge_thickness = 1
bridge_unsupported_length = 30
bridge_width = 4.0
bridge_left_support_overhang_angle = 45
bridge_right_support_overhang_angle = 60
overhang_plank_length = 1.6