Athena Perimeter Generator

In Greek mythology, Athena defeated Arachne not through greater complexity, but through discipline and precision. We named our perimeter generator after her for the same reason.

We forked Arachne to modernize it in several ways. Athena uses fixed extrusion width instead of variable and independent overlap control between perimeters. Arachne calculates overlap automatically. Athena lets you specify exactly how much perimeters overlap. It even enables negative overlap for creating gaps between perimeters. This is especially useful for flexible materials where controlling the gap between perimeters is critical. No other slicer offers this level of control.

Perimeter Compression

Athena uses many of the same settings as Arachne, but adds Perimeter Compression, which controls how aggressively beads compress into tight areas where loops converge.

Athena vs. Arachne

The difference is visible in the output. Athena produces cleaner, more predictable perimeters with consistent extrusion width, while Arachne relies on variable width that can introduce inconsistencies.

"I built a powerful PC for slicing large, complex models. With Arachne on, it took almost an hour to slice a 200mm x 200mm x 160mm molecule model. CPU was used fully for a few seconds then only one core was at intermittent 100% with 31 sitting idle. preFlight did the same slicing in about 80 seconds. 50 times faster."

- Immortal_Tuttle on Reddit

Athena

Arachne