Infill Volume

Controls how much of the interior of your print is filled with the infill pattern. This calculated as percentage of volume of your print. More infill will make your model stronger, but take more time and material to print. For prints that won’t be under significant physical stresses, around 20% infill will typically suffice


Lower percentages will decrease the number of infill lines drawn, reducing your print’s strength but saving time.


Higher percentages will increase the number of infill lines drawn, improving strength of your print at the cost of printing time. Note also that very small prints may not see much benefit from increasing infill percentages since they may be mostly solid due to a relatively large shell.

Infill Angles per Layer

This controls the number of different directions of infill that are printed each layer. Each direction will be rotated by Angle of Sparse Internal Fill degrees.


Lower numbers will lead to fewer different angles of infill with more tracks facing each angle. This will concentrate the strength of your infill along these angles.


Higher numbers will lead to more angles of infill, with fewer tracks facing each direction (the total infill percentage will be the same). Infill angles spread more uniformly throughout your print will spread the strength they provide uniformly as well.

Angle of Sparse Internal Fill

This setting rotates each direction of infill within a single layer (the number of directions per layer is the Number of Times to Draw Sparse Infill on Each Layer). This only applies to a single layer of infill; on subsequent layers this will be reset back to this starting value. The slider controls the angle (in degrees) of the rotation.


Infill Rotation per Layer

Controls the amount that the surface fill lines are rotated on each subsequent layer. By more evenly distributing infill lines you can achieve strength more uniformly in your print. The slider controls the angle (in degrees) of rotation on each layer of the infill tracks.


Instead of printing infill on every single layer, Pathio can plan to print it more infrequently. The thicker infill will take less time to print and be stronger. Your maximum infill thickness is limited by the amount of filament your HotEnd can push out at a time. Smaller nozzles or weaker extruders won’t be able to print as thick as larger nozzles or stronger extruders.

Infill Track Width

This controls how wide your infill tracks are drawn, and increases or decreases the amount of filament your printer extrudes accordingly. It can be ideal to print infill with a slightly higher track width for improved strength.

Infill track width is limited by the same factors as your normal track width. Remember, also, that infill tracks are typically printed at faster speeds, meaning you may be more likely to be reaching your maximum filament flow rate for a given HotEnd.