Five stacked slice-pipeline bugs that each made the modal's profile picker
theatrical for 3MF inputs:
(1) `_strip_3mf_embedded_settings` removed `model_settings.config` /
`slice_info.config` / `cut_information.xml` along with
`project_settings.config`. The CLI silently exited after
"Initializing StaticPrintConfigs" — exit 0, no result.json — and
Bambuddy masked the failure by re-running with embedded settings
and the source's bound printer. Strip removed from the dispatch
path entirely.
(2) Standard-tier preset stubs lacked the `type` field, so the CLI
rejected `--load-settings` with rc=-5 ("input preset file is
invalid") and the same masking fallback fired. Added
`_SLOT_TO_PROFILE_TYPE` so each stub carries the right
machine/process/filament discriminator.
(3) Sliced-archive cards listed every project-wide AMS slot (16+
swatches for a 2-color print). `slice_and_persist_as_archive` now
reads `filament_type` / `filament_color` from the sliced output's
`slice_info.config` (which `ThreeMFParser` already gates on
`used_g > 0`) instead of inheriting from the source archive.
(4) SliceModal had no warning when the picked printer profile didn't
match the source 3MF — the CLI rejects cross-printer slices
(rc=-16) and fell back to embedded settings, producing wrong-printer
g-code that errored at print dispatch. Plates response now exposes
`source_printer_model`; the modal compares against the picked
profile name and disables Slice + shows an inline warning on
mismatch.
(5) MakerWorld URL-paste resolver listed plate instances without
showing which printer each was sliced for (`/instances/hits`
omits compatibility info that lives on `design.instances[]
.extention.modelInfo`). The resolve route now joins both payloads
by instance ID and forwards `compatibility` + `otherCompatibility`
onto each hit; the MakerWorld page renders "Sliced for {primary}"
+ "Also marked compatible: ..." per row.
Tests: 6 unit tests for `extract_source_printer_model_from_3mf`, 1 for
filtered filament metadata via ThreeMFParser, 2 for makerworld resolve
compat-merge (happy path + missing modelInfo), 3 frontend SliceModal
tests for the printer-mismatch warning + Slice-disabled gate. New i18n
keys `slice.printerMismatch`, `makerworld.slicedFor`,
`makerworld.alsoCompatible` across all 8 locales.
The slice modal previously rendered exactly one filament dropdown and
silently truncated multi-color 3MFs to a single profile, producing wrong
colours on every multi-filament print. End-to-end fix across sidecar,
backend, and frontend.
Sidecar (orca-slicer-api / bambuddy/profile-resolver, separate commit):
- /slice accepts up to 16 repeated filamentProfile parts; slicing
service materializes each and joins paths with `;` for
--load-filaments.
- /profiles/bundled emits filament_type and filament_colour per leaf
so the bundled tier carries metadata into the modal.
Bambuddy backend:
- SliceRequest gains filament_presets: list[PresetRef]. Validator
accepts three shapes (multi-color array, source-aware singular,
legacy bare-int id) and lands them all on a populated array before
the route handler runs — fully backwards-compatible.
- SlicerApiService.slice_with_profiles takes filament_profile_jsons:
list[str] and sends one filamentProfile multipart part per profile
(in submission order) so the sidecar receives N profiles cleanly.
- New service slice_preview runs the sidecar's slice_without_profiles
against an unsliced project file's embedded settings, parses the
result's slice_info.config, and returns the canonical per-plate
filament list. Cached by (kind, source_id, plate_id, content_hash)
with LRU eviction at 256 entries, per-key asyncio.Lock prevents
thundering-herd; transient sidecar failures are NOT cached so they
retry naturally; parse failures ARE cached (deterministic property
of the input, no point re-running).
- /filament-requirements endpoint chain: slice_info.config (existing,
sliced files) → preview-slice (new, unsliced project files) →
project_settings.config + painted-face heuristic with 5% noise
threshold (sidecar-down fallback).
- threemf_tools gains extract_project_filaments_from_3mf and
extract_plate_extruder_set_from_3mf — the latter unions object
top-level extruder, per-part overrides, and painted-face quadtree
leaves (1-E nibbles in paint_color attrs of <triangle> elements
inside per-object .model files).
- Cloud preset listing no longer fetches per-preset detail (Bambu's
rate limit at ~10/sec returns 429 on every request for users with
50+ presets). Unified-listing dedup pass instead backfills metadata
cross-tier so a cloud entry that wins dedup over a same-named local
entry inherits the local's filament_type / filament_colour.
Frontend:
- SliceModal multi-step: plate-picker first when the source is a
multi-plate 3MF, then preset dropdowns. One filament dropdown per
AMS slot the plate actually uses, each pre-picked by metadata
match against user's local + standard presets via existing
colorsAreSimilar / normalizeColorForCompare utils.
- SliceModal-only tier priority is now local → cloud → standard
(was cloud → local → standard). Other consumers of /slicer/presets
keep the existing cloud-first order.
- Submits filament_presets array; backfills the legacy singular
filament_preset from the array's first entry for stale-tab
compatibility.
- i18n keys added across all 8 locales: slice.filamentSlot,
slice.tier.{local,cloud,standard}, slice.cloud.{notAuthenticated,
expired,unreachable}, slice.noPresetsForSlot,
slice.allPresetsRequired (en + de fully translated; six others
seeded with English copies pending native translation, matching
the project's existing flow).
Permissions: no new endpoint paths added. Preview-slice runs inside
/filament-requirements (LIBRARY_READ / ARCHIVES_READ) and multi-filament
dispatch runs inside POST /slice (LIBRARY_UPLOAD). No auth surface
widened.
Tests: 6 SliceRequest schema tests for multi-filament + legacy-new
precedence; 9 unit tests for slice_preview cache behaviour (LRU
eviction with lock cleanup, content-hash invalidation, concurrent
thundering-herd guard, no-cache-poison on transient sidecar failure);
15 unit tests for the two new threemf_tools helpers (5 + 10 cases
including the 60/40 painted-threshold regression pin); a multi-filament
wire-format test pinning the multipart part count + order; 22 frontend
SliceModal tests covering plate picker, multi-color render,
metadata-aware pre-pick, manual override, and the new tier order.
Auto-Print G-code Injection had two reviewer-reported bugs from the initial
ship:
1. Start snippets were prepended to the entire plate_X.gcode, landing
before the printer's own bed-heat / homing / nozzle-prime sequence —
so a Swapmod start snippet that assumed nozzle-at-temp ran on a cold
printer (pleite). Anchor injection at "; MACHINE_START_GCODE_END" so
snippets land where a slicer-side custom-start-gcode would. Files
without the marker keep prepend behaviour as a fallback with a
warning log.
2. Placeholders like "G1 Z{max_layer_z} F600" were written verbatim;
firmware parsed them as Z1 and crashed the head into the print on
tall models — real safety bug (DevScarabyte). Added a header parser
for the 3MF "; HEADER_BLOCK_START..END" block (lowercased keys,
[units] suffix stripped, spaces -> underscores) and a Prusa-style
{name} substitution pass over both start and end snippets before
injection. Supported placeholders: {max_layer_z} / {max_print_height},
{total_layer_number} / {total_layers}, {total_filament_weight},
{total_filament_length}, plus any other normalised header key.
Unknown placeholders are left verbatim with a warning — a typo never
silently expands to an empty string.
16 new regression tests across 4 new classes in test_gcode_injection.py
(anchored injection + missing-marker fallback, placeholder substitution
including alias resolution + unknown-pass-through, direct unit tests
for each new helper). All 2195 backend unit tests pass.
Wiki print-queue page updated with the supported placeholder list and a
{max_layer_z} safety callout for park moves.
Per-model start/end G-code snippets configurable in Settings (Workflow
tab). Queue items get "Inject G-code" toggle — scheduler injects
snippets into a temp 3MF copy before FTP upload. Supports Farmloop,
SwapMod, AutoClear, Printflow 3D and similar bed-clearing systems.
Original files are never modified.
Dual-nozzle H2D/H2D Pro: filament matching now respects nozzle assignments
from the 3MF file. Each AMS unit feeds a specific nozzle (L/R), and the
scheduler/frontend constrain matching to only trays on the correct nozzle.
Falls back to unfiltered matching when no trays exist on the target nozzle.
L/R badges shown in the filament mapping UI. Translated in en/de/ja/it.
Fix AMS slot config overwritten on startup: on_ams_change unconditionally
unlinked BL spool assignments on every MQTT pushall, then re-assigned them
sending ams_filament_setting without setting_id — clearing the printer's
filament preset. Now compares spool RFID identifiers before unlinking.
Fix BL spool detection false positives: removed tray_info_idx from detection
logic in both backend is_bambu_lab_spool() and frontend isBambuLabSpool().
Third-party spools using Bambu generic presets had GF-prefixed tray_info_idx
values, causing misidentification. Now uses only tray_uuid and tag_uid.
SQLite WAL mode with 5s busy timeout reduces "database is locked" errors.
The CodeQL cleanup in "Housekeeping" (2b11efd) bulk-narrowed except
clauses across 50+ files, breaking FTP uploads on ALL printer models.
ftplib.error_perm (550 errors) is not a subclass of ftplib.error_reply,
so diagnose_storage() CWD failures escaped the handler and prevented
STOR from ever executing — causing 100% upload failure and HTTP 500s
on /api/v1/archives/{id}/reprint and /api/v1/library/files/{id}/print.
FTP fixes:
- Remove diagnose_storage() from upload hot path
- Change all except (OSError, ftplib.error_reply) to
except (OSError, ftplib.Error) across bambu_ftp.py
Exception handling reverts (9 files):
- Revert narrowed except clauses back to except Exception in route
handlers and service code where broad catches are intentional
defensive programming (archive parsing, HTTP clients, 3MF/ZIP
processing, Home Assistant, firmware checks)
- Keep narrow exceptions only where safe (single-op blocks like
int(), file.unlink(), socket.close())
- Remove unused XMLParseError imports from archive.py, threemf_tools.py
Closes#287
Implement accurate per-filament usage tracking for Spoolman integration,
similar to OpenSpoolman v0.3.0. This replaces the previous single-spool
reporting with multi-material aware tracking.
Features:
- Parse G-code from 3MF files at print start to build per-layer,
per-filament cumulative extrusion maps
- Store tracking data in new `active_print_spoolman` database table
(survives server restarts for long prints)
- Report accurate partial usage when prints fail/cancel based on
actual layer progress and G-code data
- Add "Disable AMS Weight Sync" setting to prevent AMS percentage-based
weight estimates from overwriting Spoolman's granular tracking
- Add "Report Partial Usage for Failed Prints" toggle (only shown when
weight sync is disabled)
- Use Spoolman's filament density instead of defaults for mm-to-grams
conversion
- Prefer tray_uuid over tag_uid for spool identification
maziggy