cura-p1s

CuraEngine printer definition and G-code template resolver for the Bambu Lab P1S.

Install

pipx install cura-p1s

Commands

cura-p1s resolve — resolve G-code template variables

CuraEngine 5.12.x does not resolve template variables ({material_print_temperature_layer_0}, {if ...}...{endif}, etc.) in start/end G-code. This command resolves them using the same syntax as CuraEngine's native GcodeTemplateResolver (available on CuraEngine main, not yet released).

# Resolve templates in-place using a settings JSON file
cura-p1s resolve output.gcode --settings cura_settings.json

# Resolve with individual settings
cura-p1s resolve output.gcode --set material_bed_temperature_layer_0=60 --set material_type=PLA

# Strict mode: error if any unresolved tokens remain
cura-p1s resolve output.gcode --settings cura_settings.json --strict

# Output to a different file instead of in-place
cura-p1s resolve output.gcode --settings cura_settings.json -o resolved.gcode

With estampo

estampo writes cura_settings.json after slicing. Add a command stage to your estampo.toml:

[pipeline]
stages = ["load", "arrange", "plate", "slice", "resolve_templates", "pack"]

[resolve_templates]
command = "cura-p1s resolve {sliced_dir}/plate.gcode --settings {cura_settings}"

When CuraEngine ships a release with native template resolution, remove the resolve_templates stage — no other changes needed.

cura-p1s defs — list or locate printer definitions

# List bundled definition files
cura-p1s defs

# Print the directory path (for importing into estampo)
cura-p1s defs --path

Template syntax

Supports the same syntax as CuraEngine's GcodeTemplateResolver:

Syntax	Example	Description
{variable}	{material_bed_temperature_layer_0}	Variable substitution
{expression}	{speed_print * 60}	Arithmetic (+, -, *, /, %)
{if cond}...{endif}	{if material_type == "PLA"}...{endif}	Conditional block
{if}...{elif}...{else}...{endif}		Full conditional chain
Comparisons	==, !=, <, >, <=, >=	In conditions

Printer definition files

• bambox_p1s.def.json — machine definition for a P1S without AMS (single extruder, 0.4mm nozzle). AMS-specific start/end G-code (M620/M621 material-switch sequences) is stripped so the printer does not hang waiting for a non-existent AMS unit.
• bambox_p1s_ams.def.json — P1S with AMS variant. Inherits from bambox_p1s and re-adds the AMS-aware start/end G-code. Select this profile if you print via an AMS / AMS-Lite.
• bambox_p1s_extruder_0.def.json — extruder definition (shared by both variants)

bambox hint

The start G-code includes comment lines for bambox:

; BAMBOX_PRINTER=p1s
; BAMBOX_END

These allow bambox pack to auto-derive the Bambu firmware printer_model_id.

License

AGPL-3.0 — see LICENSE and NOTICE for attribution.