BRIDGE - Rapid one-layer bridging test

BRIDGE is a ≈8 minute object for tweaking your bridging settings. I think that the most important layer of a bridge is the first layer because it's what everything else builds onto, so we can save a lot of time by printing the first layer only. BRIDGE tests a range of unsupported bridging lengths from 5 mm to 50 mm, in 5 mm increments.

Here's a slow-motion video just because! https://youtu.be/mf-m8x8O7No

##### Do you just want to know what settings I use in Simplify3D?

- **75 % bridging extrusion multiplier** so that the drooping plastic takes up less space in the Z axis (100 % takes up around 0.15 mm of space).
- **20 % bridging speed multiplier**, which is 15 mm/s from a base speed of 75 mm/s.
- **100 % fan speed** (every layer after my first layer runs at 100 % because I am using my [GUST fan duct](https://www.thingiverse.com/thing:2594317)).
- **Bridging angle** is not normally defined, but *does have to be defined at 90°* for this test object.
- **Apply bridging setti