Question

fff: bridging
use the information below to answer the question.
in 3d fff design, a bridge is a design technique that helps minimize or reduce support structure by spanning the space between two points. the distance may vary from one manufacturer to another, but the general rule of thumb is 1cm. if the print doesnt work the first time using the default settings, there are a few things to adjust in the slicing software.
fan speed
the first thing to do is increase the fan speed. increasing the fan speed will solidify the molten polymer more quickly, building the structure as it goes. this will increase the possibility of the bridge working the first time.
temperature
to increase the viscosity of the molten polymer, reduce the temperature by about 15 degrees. this will make the polymer thicker.
print speed
a user can slow down the rate at which the print head is moving. a user can also slow down the rate at which the filament is going into the nozzle. less material will get pushed out, so it is less likely to harden before it gets to the other side.
which of the following can be adjusted in the slicing software to help a fused filament fabrication (fff) print work?
resistance, air pressure, and build volume
fan speed, temperature, and print speed
material type, angle connection, and density
light intensity, lay binding, and aright

Explanation:

The text mentions adjusting fan speed, temperature, and print speed in the slicing software for FFF printing. The first option lists irrelevant factors (resistance, air pressure, build volume). The third option lists material - type, angle connection, density which are not mentioned. The fourth option lists light intensity, layering, weight which are also not mentioned. Only the second option (fan speed, temperature, print speed) matches the text.

Answer:

fan speed, temperature, and print speed