Reduce the size of current and new JSONs by standardising them with 1 tab indentation instead of 4 spaces.
This effectively reduces the size by almost 20 MB.
| Current | New |
|---|---|
| 85.2 Mib | 67 Mib |
Used [JQ](https://jqlang.org/) `--tab` to automatically format every current JSON.
> [!NOTE]
> Some profiles had the arrays on the same line, but those created by Orca were in the standard format (each object below the previous one). In some cases, this increases the number of tabs due to the new lines, but the increase is negligible, and this way both the base profiles and those created by Orca maintain the same style.
## Problem
Some Creality printers (e.g. Ender-3 V3 SE) rely on metadata comments in the first lines of G-code files to display print info on the screen (estimated time, filament usage, layer height). This follows a format originally used by Cura/Creality Print:
```
;FLAVOR:Marlin
;TIME:3708.97
;Filament used:6.21m
;Layer height:0.2
```
OrcaSlicer currently has no way to write content before the `HEADER_BLOCK` in the G-code output, and does not expose `print_time_sec` or `filament_length_m` as usable placeholders. As a result, these printers show zeroed-out print info on screen.
## Changes
### 1. New placeholders (post-processing)
Added two new G-code placeholders resolved during post-processing:
- `{print_time_sec}` — total estimated print time in seconds (double)
- `{filament_length_m}` — total filament length in meters (double)
These values are only available after G-code generation, so they use inline marker replacement (`@PRINT_TIME_SEC@`, `@FILAMENT_LENGTH_M@`) that `GCodeProcessor::run_post_process()` substitutes with actual computed values — the same pattern used by existing M73 and layer count placeholders.
### 2. New "File header G-code" option (`machine_top_gcode`)
Added a new G-code field in **Printer Settings > Machine G-code** that writes content at the very top of the output file, before `HEADER_BLOCK_START`. This allows users to add firmware-specific metadata that must appear in the first lines.
### 3. Creality Ender-3 V3 SE profile update
Pre-configured the Ender-3 V3 SE profiles (all 4 nozzle variants) with a default `machine_top_gcode` value matching the Cura-compatible header format, so print info displays correctly out of the box.
# Screenshots
| Before (current OrcaSlicer) | After (this PR) |
|---|---|
|  |  |
## Tests
- Sliced test model with Ender-3 V3 SE profile
- Verified G-code output contains correct values in first lines:
- `;TIME:` with actual print time in seconds
- `;Filament used:` with filament length in meters
- `;Layer height:` with correct layer height
- Verified `{print_time_sec}` and `{filament_length_m}` work in both Machine Start G-code and File header G-code fields
- Verified empty `machine_top_gcode` produces no extra output
- Built and tested on macOS (arm64)
* Profiles for Creality K2 Pro printer
Added printer profiles for Creality K2 Pro based on existing K2 Plus profile and Creality Print modifications.
* Fixed filament start g-code for K2 series
K2 Plus filament profiles have additional move for filament start g-code on some filaments. This causes unnecessary moves and make filament profiles non-working on K2 series printers.
As these moves are already mirrored on printer profile and not used in rest of the K2 series they should be removed.
* Update Creality K2 Pro profiles for improved print quality
Added adaptive probing comments to machine start gcode for all nozzle sizes. Adjusted process profiles for various layer heights and nozzle sizes, including changes to bridge speeds, acceleration, wall generator and support line widths according to Creality profiles s to optimize print quality and reliability.
* Revert "Update Creality K2 Pro profiles for improved print quality"
This reverts commit ac84058c33350307a1ac23ac939d3294ae2f9c96.
* Update Creality K2 Pro profiles for improved slicing
Adjusted speeds, accelerations, line widths, and other slicing parameters for better print quality and compatibility. Updated machine start g-code to include print area comments for adaptive probing (Creality K2 Pro uses these comments to define adaptive probing area)
Updated multiple filament profiles to convert fields such as filament_cost, filament_density, and filament_max_volumetric_speed from single values to arrays for consistency. Removed unnecessary fields from filament profiles to streamline data structure. This change enhances compatibility with the updated profile handling logic in the orca_filament_lib.py script.
* Change ironing angle setting to be an offset angle from the top surface angle rather offset from the layer 0 angle that changes on each layer.
* Change Ironing angle offset range from [-1,359] to [0,359].
-1 is redundant because it is the same behavior as 0 offset.
* Change ironing_angle new default value to 0.
* Update existing print profiles' hardcoded ironing_angles from -1 to 0 to reflect new default value.
* Add migration for old -1 ironing_angle settings. Remove logic for -1 ironing_angle.
* Add u8 prefix for degree symbol string
* Use solid_infill_direction instead of infill_direction for top surface infill direction. Use calculate_infill_rotation_angle to add offset to solid_infill_rotate_template if used.
* Update quality settings wiki for Ironing
* Set f->is_using_template_angle when making ironing filler objects
* Update quality_settings_ironing link from #angle to #angle-offset
---------
Co-authored-by: Noisyfox <timemanager.rick@gmail.com>
* feat: expand Creality Ender-3 V3 KE profile with multiple nozzle diameters and new machine configurations
* Merge branch 'main' into main
* Merge branch 'main' into main
* Update Creality K2 Plus 0.8 nozzle.json
* Update Creality K2 Plus 0.6 nozzle.json
* Update Creality K2 Plus 0.4 nozzle.json
* Update Creality K2 Plus 0.2 nozzle.json
* Increase PEI bed temp to 100C from 60C for ASA
* Merge branch 'main' into creality-patch
* add creality ender-5 max
* add filament profiles for ender-5 max
* update creality manifest
* fix references
* put creality.json at 4 space indent
* remove invalid parameters
* fix thumb format
* Merge branch 'main' into feature/ender-5-max
The default build plate model for Creality K2 Plus is heavy (516kB) and has a lot of visible artefacts - like diagonal "stairs". I found this a bit annoying. So I redrew the file - to a simple flat stl - 16kb.
* added change g-code
* adjusted change_filament_gcode for all k2 profiles
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
* removed extra space on new line characters. to exeactly match creality print
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
* disabled filamanet ramming and cleared Single Extruder Paramaters
* Merge branch '7607-k2plus-filament-change-gcode' of https://github.com/brandonfhall/OrcaSlicer into 7607-k2plus-filament-change-gcode
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
* Merge branch 'main' into 7607-k2plus-filament-change-gcode
Using my Ender 3 V3 SE I noticed weird printing behaviour. Searching for
the cause, I found that the default layer height for a 0.2mm nozzle for
the printer was set to 0.08mm min and 0.32mm max, which are the default
20%/80% values for a 0.4mm nozzle. This commit changes the values for
all Creality printer which had not a reasonable default value for 0.2mm,
0.6mm and 0.8mm nozzles to 20% min and 80% max.
Co-authored-by: SoftFever <softfeverever@gmail.com>
