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The SliceConfig struct defines the fundamental parameters for slicing a 3D model into layers for resin printing. These settings determine the physical characteristics of your print and how the model is converted into printable layers.

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SliceConfig Structure

The main configuration struct is defined in common/src/slice/config.rs:14 and contains the following fields:
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format
Format
default:"Format::Ctb"
The output file format for sliced files. Supported formats include CTB, GOO, and others. Only .goo and .ctb files can be sent with the Remote Print module.
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platform_resolution
Vector2<u32>
default:"11520 × 5120"
The resolution of the printer’s LCD screen in pixels. This determines the maximum detail your printer can produce.Default: 11,520 × 5,120 pixels (Elegoo Saturn 3 Ultra)
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platform_size
Vector3<Milimeters>
default:"218.88 × 122.904 × 260.0 mm"
The physical dimensions of the build platform in millimeters (width × depth × height).Default: 218.88 × 122.904 × 260.0 mm (Elegoo Saturn 3 Ultra)The Z-axis value represents the maximum build height.
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slice_height
Milimeters
default:"0.05 mm"
The thickness of each individual layer in millimeters. Also known as layer height.Default: 0.05 mm (50 microns)Smaller values produce higher detail but increase print time. Common values range from 0.025mm to 0.1mm.
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first_layers
u32
default:"3"
The number of initial layers that use the first exposure configuration. These layers have longer exposure times to ensure proper adhesion to the build plate.
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transition_layers
u32
default:"10"
The number of layers that interpolate between first exposure settings and normal exposure settings. This creates a gradual transition to prevent delamination.Note: Transition layers are calculated after the first layers and interpolate between the two exposure configurations.

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Calculated Properties

The SliceConfig provides several computed properties:

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Pixel Area

Calculates the physical area of a single pixel on the LCD screen: 
pub fn pixel_area(&self) -> SquareMilimeters {
    let x = self.platform_size.x / self.platform_resolution.x as f32;
    let y = self.platform_size.y / self.platform_resolution.y as f32;
    x * y
}

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Voxel Volume

Calculates the volume of a single voxel (3D pixel): 
pub fn voxel_volume(&self) -> CubicMilimeters {
    self.pixel_area() * self.slice_height
}
The slicer calculates total print time based on layer count, exposure times, lift/retract distances and speeds. See print_time() method in common/src/slice/config.rs:56 for the full calculation.

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Usage in the UI

In the Mslicer application, these settings can be configured in the Slice Config window. Users can:
  • Select from predefined printer presets or use custom values
  • Adjust platform resolution and size (when using custom preset)
  • Configure slice height with metric input
  • Set the number of first layers and transition layers
The UI automatically updates model bounds checking when platform size changes to ensure models fit within the build volume.

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