Four filaments.
All of these colours.

Your top surface becomes a stack of 1–3 passes, each with its own tool, angle and share of the layer height. Build one here and watch the printed colour come out.

The same Sandwich as a block you can turn round, cut open, with the composited colour on its top face. Then the question everyone gets to second: what the filament underneath does to every recipe you saved.

A pass that picks the filament for every single fill line: dithered blends, exact stripes, textile weaves, hand-typed patterns. The dither is Bresenham, so you get the same result every slice.

A gradient made out of geometry. One filament climbs as a physical ramp inside the layer, one print-height step per fill line, and a second one caps the rest. The fade you see is optical.

Why a stack of passes reads as one colour. Transmission Density, Beer–Lambert, the reachable gamut from your four filaments, and an inverse ΔE2000 search for a colour you name.

Save Sandwiches as profiles and flood-fill them onto individual faces. Different steps of one object, each with its own recipe, and the weave drawn live on the model.

Load a vector drawing onto the top or bottom face and every colour becomes a recipe from your four filaments. Then turn any of them into a stripe, a weave or a ramp. HueForge, with vectors.

Composite the G-code the way the eye will resolve it, then light it like a product shot and export a PNG whose shadow lives in the alpha. Plus the real prints, so you can judge the gap yourself.

A wipe tower planned after slicing, when every toolchange is known, including the sub-layer primes a Sandwich inserts inside a single layer. It is what makes adaptive height × multi-tool × Sandwich work at all.

A layer-ranged, per-tool G-code post-processor you edit as a chart. Real font kerning for embossed text. And bridges that anchor on solid ground before they cross.

A two-key gate that unlocks the professional and experimental half of the fork: assemblies without a boolean union, per-volume compensation, full part settings, Simplify3D import, realistic shading.

Place one object precisely against another, extrude a face, run a boolean that keeps the painting. Then make the slicer believe it: a face resting on another object prints as solid contact instead of a false bridge over thin air. Drag and drop that lands on the real surface below.

Point at the surface you want held up, then at where the column should land. The pillar is built between the two, its roof is the real patch with its curve on it, and the panel draws the section at true scale before you commit.

Support that routes around the other objects on the plate instead of growing through them, which nothing else in this slicer family does. Plus a wave-front roof that diffracts around concavities, over a hollow pillar.

NeoArachne lets you pick which engine prints the outer wall, the inner walls and the gap fill, separately. Painter Pro Mode adds precision brushing and screen-space masks. NeoStitch interlocks layers without ever moving Z.

Draw layer height as an exact curve with control points and per-segment tension, over the object's real layer bands. Colour-aware guidance shades the heights your filaments can actually hold.

The same curve pointed at any setting. The infill cell opens where nothing rests on it and closes under the top surface, at the same density and the same grams. Fuzzy skin is born, lives for a band, and dies again. No other slicer has it.

A PNG becomes physical relief: displacing wall centrelines around the object, per painted zone, or modulating the Z of the top-surface fill point by point into a real height field.

A filament library with real TD values, both Sandwich zones, every pass kind, and the printed colour resolving live. Park two recipes side by side and read the ΔE between them.

The mixer, the gamut explorer and its ΔE2000 matcher, the pattern lab, the PathBlend staircase and the TD explorer, in one place.

The gate matrix, the maturity table, the version history, the whole "where do I find this" index and the FAQ, on one scrollable page.

Seven short animated walkthroughs, from "why fork Orca at all" to painting a Sandwich click by click. Still exactly where it always was.

Builds for macOS, Windows and Linux, plus the notes for every release since 2.3.