- Thinner filament can be heated faster because it takes less time for heat to penetrate to the centre of the filament, implying faster printing and less hefty heating elements
- 1.75mm filament weighs less per unit length and thus the extruder mechanism has less mass to worry about when shifting to and fro
- Thinner filament can be bent more easily, implying smaller tighter and smaller coils and possibly smaller storage mechanisms
- Smaller nozzles are more capable of avoiding ooze when the flow can be slightly reversed by the extruder’s stepper motors
Researchers in the US military have developed a set of tests to determine the strength of 3D printed parts that could aid in future metal 3D printing quality control.