Rendered from CHANGELOG.md in the repository — edit it there.

Changelog

All notable changes to Slicer Engine are documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

This file is the single source of truth for release notes. It is embedded into every build (CLI, WS server, WASM/UI, desktop) at compile time and republished verbatim as the body of each GitHub Release. See RELEASING.md for the workflow that keeps those in sync.

[Unreleased]

Changed

• Smooth-bridge defaults. Bridges now print at 10 mm/s with a 1.5× flow ratio by default, so their strands fuse into a continuous floor and full part-cooling freezes them before they sag — the community "smooth unsupported bridge" recipe, out of the box. The most-airborne overhang band drops to 8 mm/s to stay below the new bridge speed.

Added

• Bed mesh leveling directives. A new bed_mesh_mode setting emits BED_MESH_CALIBRATE/BED_MESH_PROFILE LOAD (Klipper) or G29/M420 S1 (Marlin/RepRap) at print start — off by default, so existing output is unchanged. bed_mesh_adaptive bounds recalibration to the print's own footprint instead of the whole bed, and a custom start script that already handles leveling takes priority over the slicer's own directive.
• Minimum layer time (slow-down for cooling) — min_layer_time_s scales a short layer's feedrates down so it takes at least that long to print, giving thin walls and small details time to cool before the next layer lands. Slowing is clamped at min_print_speed (default 10 mm/s) to avoid heat-creep or grinding; any remaining shortfall is made up with a dwell. The first layer is exempt. Disabled by default (0).
• Full role coverage for acceleration, on by default — inner_wall_acceleration, sparse_infill_acceleration, solid_infill_acceleration, gap_fill_acceleration and support_acceleration round out the role table started by outer_wall_acceleration/bridge_acceleration, so every printing role can carry its own firmware acceleration limit. A new travel_acceleration lets non-printing hops ramp at their own (usually higher) rate, switching back to the printing value before the next extrusion. Every acceleration setting now ships with a non-zero default tuned for a fast, well-built machine (10000 mm/s² baseline, up to 15000 for travel, down to 1000 for the first layer and bridges) instead of silently deferring to firmware defaults — a slower or untuned printer should dial these down. Set any of them to 0 to fall back to the previous behaviour.

[0.4.0] - 2026-08-31

The biggest release so far — 181 files and about 15,000 new lines — and it pulls in two directions at once. Print quality gains the three settings that were missing or only pretended to work: ironing, dimensional compensation and a real first layer height. And the app itself stops being desktop-only: an iPad or a phone now gets a layout, gestures and controls built for it, on a home screen that draws in a fraction of the time.

Highlights

• Ironing, dimensional compensation and a real first layer height — the finishing controls a print actually needs. Ironing re-melts top surfaces flat, XY/hole compensation corrects a machine that prints over- or under-sized, and the bottom layer is finally sliced and extruded at the thickness the profile asks for.
• Elephant-foot compensation that keeps thin detail — the flare at the base of a print is removed without erasing the first layer's fine geometry. Unlike a plain shrink, the correction is limited by how thin the model is at each point, so embossed text, logo strokes and thin ribs survive where a uniform 0.3 mm offset would delete every feature under 0.6 mm.
• A slicer that fits a tablet and a phone — an iPad keeps the desktop layout but folds panels away from the plate, tap, long-press and drag work with a finger or a Pencil, and below 640px the whole interface rearranges into a bottom tab bar, a settings drawer and a slice sheet. Previously a 390px screen gave the 3D view about 50px of width.
• A home screen that appears immediately — 691 kB to first draw, down from 1.58 MB, with the slicing engine, the 3D viewer and the code editor loaded only when you reach for them. Blocked main-thread time on arrival falls from about 2 s to under 30 ms.

Added

Print quality

• Ironing — the top-surface smoothing toggle now does something. Previously it could be switched on in the profile wizard, was documented as working, and logged "not yet implemented" at slice time. A near-dry pass re-melts finished top surfaces flat, with its own type, flow (10 %), spacing (0.1 mm), speed and angle, and its own colour in the preview.
• Dimensional compensation — correct a machine that prints consistently over- or under-sized. XY size compensation offsets every contour; hole compensation adjusts holes on their own, so a tight press-fit can be freed without moving the outside of the part. Both default to off.
• Elephant-foot compensation — corrects the flare the bed's squish leaves at the base of a print. Unlike a plain shrink it is limited by how thin the geometry is at each point, so embossed text, logo strokes and thin ribs on the first layer keep their width instead of being erased. It also holds back where the model itself flares steeply outward, and switches itself off on a raft. Off by default; 0.1–0.2 mm suits most machines.
• First layer height — now affects the print instead of only the file header. The bottom layer is sliced and extruded at its own thickness, so a profile asking for 0.24 mm no longer silently prints 0.2 mm. Skirt and brim follow it; a raft suppresses it.

Tablets, phones and touch

• Tablet layout — an iPad keeps the full desktop arrangement but stops leaving panels open over the plate: the G-code inspector and the object list both start folded, and the print-settings tab moved out of the middle of the screen, where the model is. Opening the settings drawer no longer dims the plate behind it — you are peeking at the settings, not leaving the model. Applies to any window under 1024px, so Split View and a docked desktop window get it too.
• Phone layout — the whole UI rearranges itself below 640px instead of overflowing. Navigation moves to a bottom tab bar, print settings become a drawer with a pull tab on the left edge, and Slice sits in a full-width sheet along the bottom with the G-code inspector scrolling inside it. Settings sections become a scrollable chip strip and the printer/filament/profile editors stack instead of splitting into two columns.
• Finger-sized controls on touch screens — buttons, dropdowns, legend chips and the layer slider are now sized for a fingertip on every touch device rather than only on phones. The layer slider's grip went from 18px to 26px; scrubbing through layers on a tablet was the worst of it.
• A context menu on the plate — right-click a model, or press and hold it on a touch screen, for Duplicate, Drop to floor, Centre on bed and Remove, acting on the whole selection when you have one. Holding empty bed offers select all, clear, place objects and reset view.
• Multi-select for touch and pen — a tool-cluster toggle that makes each tap add or remove an object, standing in for the ⌘/Ctrl a tablet has no key for. It appears once there are two objects to choose between, and turns itself off when it can no longer be reached.
• Drag a selected model across the bed — with a finger or a pen, select a model and then drag it. Dragging anywhere else still orbits, so nothing moves unless you picked it first. The move handles are also drawn larger on touch, so a fingertip can pick one axis instead of all three.
• Fold the G-code legend out of the way — the inspector now has a header you can tap to collapse it to a single row, keeping the layer counter and the Slice button in place. Unfolded it sizes itself to the room actually available, so on an iPad the whole legend and both sliders are visible without scrolling. It starts folded on tablets, phones and narrow windows, open on a large screen, and remembers whichever you choose.

Loading and startup

• A loading screen on first open — the logo now appears immediately with a progress bar beneath it, instead of a blank page while the app downloads. A tiny embedded copy shows straight away and sharpens once the full artwork arrives, and the bar tracks the real download rather than guessing.
• Visible page loading — switching between Home, Slice and Settings shows a thin progress line and marks the destination in the navigation rail whenever the wait is long enough to notice. Anything under 120 ms stays silent, and the app quietly pre-fetches the other areas once it has finished starting up.
• Reload prompt for stale tabs — if a page can no longer be loaded because the app was redeployed under an open tab, the existing update banner now offers a reload instead of the click doing nothing.

Platform

• Keep the app on an iPhone or iPad without a Mac attached — pnpm run ios:install builds the release app, signs it with a free Apple ID and installs it on a connected device, so it keeps working after the dev server stops. No paid Apple Developer Program: the trade is that a free signature lasts seven days, and re-running with --renew resets the clock without touching your models, profiles or settings.
• Preset catalog picking got faster and more honest — the picker loads a page at a time instead of walking the whole category, fetches the complete preset when you import it (so its slicing parameters really arrive), and shows a busy state on the entry you picked while it does.
• GitHub links in the title bar and catalog picker — a direct route to the project, and to the source of any catalog preset.

Changed

Speed and size

• Faster startup — the app now downloads 691 kB before it can draw, down from 1.58 MB. The 3D viewer, the settings workspace and the code editor are fetched when you actually open them, not before the home screen appears.
• The home screen appears without waiting for the slicing engine — the ~750 kB WebAssembly engine and its worker used to load before the first screen could draw, even though nothing there needs them. They now load once the browser is idle, or the moment you open a model, whichever comes first. Blocked main-thread time on arrival falls from about 2 s to under 30 ms, and the page weighs 536 kB less.
• Smaller install and deploy — the bundled code editor no longer ships ~90 programming-language grammars and four language servers it never used. Total deployed JavaScript falls from 17.7 MB to 8.4 MB.
• Settings pages open without loading the code editor — the G-code editors on the printer and filament pages sit well below the fold, but still cost ~4 MB the moment the page opened. They now load when you scroll to them.
• The in-app logo is 74% smaller — 52 kB of PNG became 14 kB of WebP.

Interface

• Touch targets and form rows on phones — controls grow from 34px to 40px, labelled rows stack so a dropdown gets the full width, toasts move to the top of the screen (the bottom now belongs to the slice sheet), and the object list folds to a chip that still flags a part that cannot print.
• The object list remembers whether you folded it — it starts folded on a tablet or a narrow window, and unfolding it now sticks instead of resetting on the next visit.
• Two controls are hidden on phones — the viewport cube, which needs a drag it cannot receive, and the projection toggle and operation-pipeline inspector, which do not fit alongside the tools that get a model sliced. All three return on any wider screen.
• You can pinch to zoom the interface again — zoom was disabled across the whole page to keep gestures away from the 3D view. Only the 3D view holds onto them now, so settings, prose and small print can be magnified everywhere else.
• Muted text is legible — the quietest text tone sat below the contrast minimum in both themes, and well below it in light mode. It has been darkened (light) and lightened (dark) enough to pass on every surface it appears on.
• "Running in your browser" appears when you open a model, not the instant the page loads. Same message, but it now arrives when you have something to slice — and it is no longer the first thing a new visitor meets.

Development

• The dev stack starts on a seeded pair of random ports, so a second worktree, a colleague on the same machine or a parallel agent session never collides with yours.
• The documentation site now wears the app's own design language, built from the same theme tokens the product uses, so the two cannot drift apart.

Fixed

Touch and gestures

• Tapping a model on a tablet now selects it — two separate faults made touch and Pencil selection fail. An invisible transform-gizmo hit area sat parked at the centre of the bed whenever nothing was selected, and swallowed any tap that landed on it; that check runs only for touch and pen, so a mouse never saw it. Selection was also judged by a mouse-sized 4px tolerance, and a fingertip is a ~10mm disc whose reported centre wanders as the skin flattens, so most real taps were discarded as drags. Taps are now judged per pointer — 4px for a mouse, 9 for a pen, 16 for a finger — and a hidden gizmo no longer intercepts anything.
• Pinching to zoom no longer spins the model on a touchscreen — rotation is measured as an angle, so its noise floor grows as your fingers close; a measured pinch-in sprayed ~16° of unwanted roll. Twist now has to be a sustained, deliberate turn, and once you have clearly started pinching the view is locked against rolling for the rest of the gesture.
• Slow pinches now zoom — a gentle pinch moves well under a pixel per event on a 120 Hz iPad, and every one of those was discarded rather than banked, so the camera simply refused to move. Small movements now accumulate.
• A palm can no longer hijack a two-finger gesture — a hand settling while two fingers were already pinching was let through, and took over the gesture the moment a real finger lifted.
• Losing a finger no longer freezes the camera — a touch released over the toolbar, or the app being backgrounded mid-pinch, could strand the viewport with navigation disabled until the page was reloaded.

Plates and slicing

• Plates holding several models now slice correctly everywhere — a workplate is a build plate, not a file, but only the hosted slicer treated it that way. The desktop app sliced every object out of the first model, so a second one came out as a copy of the first; the in-browser slicer refused outright with "Missing mesh bytes". Each object now resolves to the file it was actually loaded from, in every runtime.
• The desktop app now prints the plate you arranged, not the file you opened — models were sliced exactly as their source file defined them, ignoring every move, rotation and drop-to-bed. A multi-part 3MF came out with its parts still stacked as the authoring tool assembled them, and duplicates or extra parts were dropped entirely.

Interface

• The "Print settings" tab no longer flickers when you hover it — pointing at the tab used to open the drawer, which hid the tab, which closed the drawer, in a loop. Resting at the very edge of the screen still peeks at the panel; the tab itself now only responds to a click.
• Dialogs no longer collapse in Safari — a dialog with a body ("Running in your browser", "What's New", the operation pipeline) drew as a title with the buttons jammed underneath and its content squashed to one clipped line. It now opens at its full height and scrolls when taller than the screen. Affected iPad, iPhone and the macOS app; the in-browser slicer worst of all, since its welcome notice is a dialog.

Next up

Two big ones are being worked on right now:

• Support structures — the last major gap in the pipeline. Overhangs that need holding up will finally get held up.
• Importing your existing profiles — bring the printer, filament and process profiles you have already tuned in another slicer straight into this one, instead of rebuilding them by hand.

Contributors

Thanks to @max-scopp for shipping this release.

[0.3.0]

The preset catalog goes live. "Pick it from the catalog" in the printer and filament wizards now browses the real Cold Crabby Preset Cloud instead of an empty placeholder, so a new profile can start from a genuine vendor preset. Add touch-friendly undo/redo in the 3D view and a round of Windows desktop polish.

Highlights

• Live preset catalog — the printer and filament wizards now search the Cold Crabby Preset Cloud for vendor presets and pre-fill a new profile from your pick. Search is ranked server-side across the whole catalog, and if the cloud is unreachable the app falls back to its built-in defaults and keeps working offline.
• Undo / redo in the 3D view — history buttons on the plate toolbar for touch devices where the ⌘/Ctrl+Z shortcut can't be reached.

Added

• Preset catalog picker — browse and search real vendor presets when creating a printer or filament profile; a pick pre-fills the profile's identity fields, tagged with a link back to its catalog source.
• Undo / redo buttons in the 3D view — forward and backward history buttons on the plate toolbar. Shown automatically on keyboard-less tablets and phones; force them on or off in Settings → General → Controls. Auto by default.

Changed

• Live accent tracking is event-driven — the desktop app now updates its accent tint the moment you change it in the OS (Windows registry change notifications; macOS distributed notifications) rather than catching up on a 2-second poll.

Fixed

• G-code editors render properly in the browser build — the printer and filament G-code boxes could show up as a plain, unstyled text field instead of the syntax-highlighting editor, most often on the in-browser (WASM) version. The editor now waits for its own styles to load before it appears, so it comes up fully formed every time.
• Undo no longer wipes the plate after navigating — dip into Settings and back, or use the browser's back button, and your objects keep their positions and undo history instead of being deleted by the next undo. History now resets only when the workplate is genuinely replaced.
• The "re-slice" hint no longer clears itself — moving an object or changing a setting while a slice is running used to be silently absorbed into the preview once it finished, so the "Scene changed — re-slice" hint disappeared even though the on-screen G-code predated your edit. The comparison baseline is now captured the moment you press Slice, so a mid-slice change correctly keeps the hint lit until you re-slice.
• No more flashing console on Windows — the desktop app used to re-read the OS accent colour every couple of seconds by shelling out, which popped a brief cmd window on Windows on every check. It now reads the accent directly and waits for the OS to signal a change instead of polling, so the flickering after login is gone and macOS stops re-checking on a timer too.
• No more launch hang on Windows — the desktop app used to open a blank, unresponsive window for a moment on Windows before it became usable. Its window now stays hidden until the interface has actually drawn, so the app appears fully rendered and ready the instant you see it.

Contributors

Thanks to @max-scopp for shipping this release.

[0.2.0] - 2026-08-30

The build plate grows up. What used to be one model on a plate is now a real build plate — add as many objects as you like, cancel a failed one mid-print, or print them one at a time — and every infill pattern finally deposits the exact density you ask for at any line width.

Highlights

• Multi-object build plates — place several models on one plate, manage them in a new Objects panel, cancel a single failed part from Mainsail/Fluidd, or print parts sequentially front-to-back. Multi-part 3MFs land as separate, named objects instead of one fused blob.
• Infill that hits its density — line spacing and per-line flow now come from the real extrusion width, not a hardcoded 0.4 mm. Grid stopped printing double, honeycomb tiles and stacks like it should, and a 0.6 mm nozzle asked for 20 % no longer prints ~13 %.

Added

Infill & surfaces

• Advanced infill options — infill anchors (weld sparse lines to the wall and merge broken dashes into one continuous move — the biggest quality win here), sparse-infill layer combining (print shared infill once at a stacked height), internal solid layers, separate top/bottom/internal surface patterns (including monotonic for a cleaner top finish), and a bridging-angle override. All off, or matching the previous behaviour, by default.
• Five more infill patterns — aligned-rectilinear, triangles, tri-hexagon, cubic and concentric. OrcaSlicer's pattern names are accepted as-is, so imported profiles map without a translation table.
• Spiral (vase) mode — spiral_vase (CLI --spiral-vase) prints a single continuous outer wall whose Z ramps smoothly over each layer, for a seamless single-wall vase with no Z-seam. Off by default.

Multi-object build plates

• Cancel one object mid-print, or print objects one at a time — the plate now tracks which part every extrusion belongs to. Exclude object wraps each part in firmware markers (Klipper EXCLUDE_OBJECT_*, Marlin / RepRapFirmware M486) so a failed part can be cancelled from Mainsail, Fluidd or OctoPrint while the rest of the plate carries on. Sequential printing (Print order → by object) finishes each part front-to-back, lifting clear of everything already on the bed, with clearance checks reported as warnings and optional between-object G-code. Both off by default; with both off the plate slices exactly as before.
• Multiple objects per workplate — a plate is now a build plate, not a single file. An Add model button and a multi-select picker place more models without replacing what's there, a new Objects panel lists and manages them (flagging anything out of bounds or overlapping), and reopening a saved plate restores every object. Multi-part 3MF files now land as separate, named objects instead of one fused blob.
• One placement command — a single Place objects tool replaces the rival "auto-orient" and "arrange all" buttons that undid each other's work. It sits with move / rotate / scale and opens a card for the two things worth varying (auto-orient and gap). The same settings apply when you drop a model in.
• Preferred print orientation, per printer — set a diagonal angle (e.g. 45° for CoreXY) applied to every auto-oriented part after it's laid on its best face. Defaults to 0° (untouched).
• Multi-object CLI slicing — slice -i part_a.stl -i part_b.stl builds one plate. A new --arrange flag (with --arrange-spacing and --arrange-auto-orient) packs it without overlap, and the transform flags apply to every loaded model.

Printer & firmware output

• Chamber temperature management — the filament asks for a chamber temperature (with a hotter first-layer soak) and the printer says whether it can deliver it; only when both agree are directives emitted, with a safe soak sequence and Klipper's native commands. A start G-code that already heats the chamber keeps ownership.
• Z offset — a per-printer z_offset_mm (Settings → Printers → Hardware) added to every Z coordinate written to the G-code, so it works on any firmware with no macro to maintain. Same meaning as in PrusaSlicer and OrcaSlicer.
• Dynamic overhang speed & cooling — perimeter segments are graded by how much hangs over unsupported air, and each degree prints at its own speed with extra part-cooling. On by default.
• Advanced retraction modes — firmware retraction (G10/G11), relative extruder distances, minimum-travel-before-retract, restart-extra prime, retract-on-layer-change, and wipe-while-retracting. All default to the previous behaviour.
• Perimeter routing & ordering options — external_perimeters_first (outer wall now printed last by default, matching PrusaSlicer/Orca/Cura), extra_perimeters, thin_walls (classic generator), and ensure_vertical_shell_thickness and avoid_crossing_perimeters. Defaults preserve existing behaviour except the inner-first ordering.
• Volumetric-flow limiter — max_volumetric_speed (mm³/s) caps the feedrate so the hotend is never asked to melt faster than it can, per-segment for variable-width beads. Defaults to 0 (unlimited).
• Geometry-aware acceleration — outer_wall_acceleration and bridge_acceleration add role-specific limits on top of layer-type acceleration (lower outer-wall for less ringing, low bridge for steady flow). Default 0.
• Layer-type acceleration control — acceleration, first_layer_acceleration and top_surface_acceleration emit a firmware acceleration command when the target changes. Default 0.
• Pressure / linear advance output — a non-zero pressure-advance value is emitted once after the start script in the correct firmware form (Klipper SET_PRESSURE_ADVANCE, Marlin M900 K). 0 disables it.
• G-code metadata header — every program opens with a flavor-specific metadata block: slicer version and timestamp, model name, layer count, height, filament usage, time estimate and bounding box. A new filament_density_g_cm3 drives the weight.

Models & profiles

• Automatic mesh repair on import — holes are capped, cracked vertices welded, inside-out triangles turned right-side-out, and zero-area or duplicate triangles dropped. The UI raises a toast, the CLI logs a warning, and a new mesh-check command prints a full report without slicing. Clean models are never touched; pass --no-mesh-repair to slice the raw geometry.
• Export your profile library — Settings → General downloads every printer, filament, print profile and label as TOML (a ZIP bundle, or a single profiles.toml the engine reads directly). Printer API keys are stripped, so the export is safe to share.
• Settings tell you when they depend on something else — a chamber temperature set for a printer with no chamber heater now says plainly it won't take effect and links to the fix. The CLI prints these warnings too.

App, platform & tooling

• Release notes inside the app — Settings → What's New lists every release, newest first, with the version you're running highlighted. The post-upgrade dialog shows that same list.
• iPadOS / iOS target — the Tauri shell now builds and runs on iPad with the full slicing engine on-device. The pnpm run ios:* scripts drive the toolchain, Xcode project generation, and a live-reload simulator build.
• Slice diagnostics & bed-type tracking — a bed_type setting is recorded in the header, and the slice CLI reports model height, filament usage and the estimated print time.
• Live versioning — every build reports its true version, derived from git tags. Development builds report development.
• Embedded changelog — bundled into every target; the UI shows a "What's New" dialog the first time it runs after an upgrade.
• Releases pipeline — tagging vX.Y.Z builds all targets and publishes a release whose notes are taken from this file.
• Commit revision in build info — every build records the exact short commit hash, shown in Settings → General and reported by the CLI info command.

Changed

Infill accuracy & patterns

• Infill density is now accurate at every line width — line spacing and the flow charged for each line both come from the real extrusion width, not a hardcoded 0.4 mm reference. A 0.6 mm nozzle asked for 20 % used to print ~13 %.
• Grid infill no longer prints double — it laid two full-density passes instead of two half-density ones. Honeycomb cells and the gyroid period are on the libslic3r relations now too, and all scale with the line width.
• Honeycomb is a real hexagonal tiling — continuous zig-zag walls drawn once, instead of stamped hexagons with every shared wall drawn twice.
• Honeycomb cells stack again — it (and triangles, tri-hexagon, cubic) was rotated 90° every other layer and keyed to the region's bounding box, so walls landed on the layer below's voids. Consecutive Voron-cube layers now share 79 % of their infill geometry, up from 2 %.
• TPMS-D actually prints now — its segments are chained into continuous curves and the period recalibrated, so it deposits the full requested density instead of about a seventh.
• Top surfaces default to monotonic line, bottoms to monotonic — a cleaner, direction-consistent finish that also stopped 106 mm² of top-surface material printing over the inner wall on a Voron cube.

Docs & dependencies

• The documentation now leads with the product, not the architecture — a proper guide to using Cold Crabby plus a teams track for self-hosting and configuration, with the engineering docs slimmed to a map. A banner notes the docs are early and their structure may still change.
• Dependency maintenance — cleared the Dependabot backlog: the Angular front-end moves to the 22.x line on TypeScript 6.0, the Rust engine to sea-orm 2.0 and reqwest 0.13, plus the grouped npm bumps. No behavioural change to sliced output.

Fixed

Print quality

• Your filament's cooling settings are now actually used — Fan Speed, Bridge Fan Speed, First Layer Fan Speed and Fan Off For First Layers were shown and saved but ignored by the generator, so the part-cooling fan ran during the first layer for every material, quietly costing bed adhesion. Fan Speed is now the cooling ceiling, and the bridge and overhang boosts are held back on the layers where cooling is off.
• Isolated infill specks in narrow wedges — a connected infill region too small to hold more than one dash (2 mm² at a 0.4 mm nozzle) is now skipped. It's an area rule, so a genuinely thin cavity that deserves a lattice keeps every line.
• Generator-specific wall options are now hidden for the generator that ignores them — thin_walls / wall_distribution_count (classic) and gap_fill_min_length_mm (Arachne). This also stopped thin_walls from silently deleting Arachne's thin features — turning it off had wiped ~50 slot fins on a filament card caddy. Arachne now always prints thin features.
• Top-surface "squiggles" where solid fill grazes a wall — a surface meeting the wall band at a shallow angle was filled with a dense micro-serpentine of sub-millimetre stubs. Solid surface regions narrower than one extrusion width are now dropped before filling, while thicker geometry keeps its exact shape and sharp corners.
• Arachne "splat" gap-fill and gap fill under top surfaces — isolated sub-millimetre gap-fill beads (≈270 on a 3DBenchy) that cost a full retract/travel/un-retract each are dropped, and a redundant bead running under a thin solid strip is pruned with the surface filling the strip in its place.
• Tiny sparse-infill "splat" dashes — solid_regions is now grown by one bead before being subtracted from the infill area (killing the crescent slivers the scanline shattered into dashes), and min_infill_extrusion_mm also filters sparse infill. Together with the gap-fill fixes this cut isolated sub-0.8 mm extrusions on a 3DBenchy by ~76 %.

Interface & import

• The documentation site failed to build — a line of prose wrapped an inline code span across a line break, leaking its placeholders out as raw, unclosed HTML.
• The transform panel was blank whenever more than one object was selected — it now edits the whole selection: Position shifts every part by the same amount (keeping your layout), while Rotation, Scale and Size apply per part about each one's own centre.
• The arrange gap defaulted to 0 mm on a fresh install — an unset preference read back as 0 rather than "unset". It now starts at 4 mm.
• iPad Apple Pencil + two-finger navigation "spazzing" — the viewport's pointer arbiter now classifies a whole gesture group at once, so a two-finger pan/pinch is never split into a stray single-finger camera rotate.
• 3MF models loaded at the wrong scale — the importer ignored the <model unit="…"> declaration and read every coordinate as millimeters. All six spec units are now normalized on import.
• Viewport-cube ortho snap popped back to perspective on pan/zoom — only a genuine rotate now breaks the flattened, dimension-true view; panning and zooming keep it, so you can inspect a snapped view up close.

Contributors

Thanks to @max-scopp, who built everything in this release. Onward to 0.2.0.

[0.1.0] - 2026-08-23

Added

• Initial slicer engine: STL/OBJ/3MF loading, mesh slicing, Arachne variable-width wall generation, top/bottom surface detection, and infill.
• Unified scene engine (single source of truth for object placement) shared by the CLI, WebSocket server, and WASM UI.
• Angular UI with a Three.js viewport and G-code preview, plus a Tauri desktop shell.
• Command-line interface with slice, info, and schema-generation commands.