Example 3: Three Columns
Two parallel dividers make three compartments side by side.
BGI / EXAMPLE 03Dimensions in mm

What to notice in the project file
Section titled “What to notice in the project file”This section shows the walls and compartments BGI will make:
assemblies: - id: tray kind: grid construction: open_grid_box assembly: glue_allowed interior: id: all kind: split axis: x clear_mm: [100, 80, 30] first:Full project file
Section titled “Full project file”The shaded lines mark that section in the complete YAML. This is the same project file linked below.
schema_version: 1readme: "Two parallel dividers make three compartments side by side."project: id: three-columns name: Three Columnsbox: inner_mm: [110, 90, 40] side_clearance_mm: [0, 0, 0, 0] top_reserve_mm: 0material: profile: de-mdf-3mm overrides: thickness_mm: 3 kerf_mm: 0.16 fit_clearance_mm: 0.10assemblies: - id: tray kind: grid construction: open_grid_box assembly: glue_allowed interior: id: all kind: split axis: x clear_mm: [100, 80, 30] first: id: left kind: compartment clear_mm: [30, 80, 30] second: id: right-group kind: split axis: x clear_mm: [67, 80, 30] first: id: middle kind: compartment clear_mm: [30, 80, 30] second: id: right kind: compartment clear_mm: [34, 80, 30]layout: mode: manual construction_mode: full_box placements: - id: tray origin_mm: [2, 2] rotation_deg: 0Open 03-three-columns.bgi.yaml and save a copy if you want to edit it in your own folder. Follow Plan your own layout to validate and build it.