A parametric, grid-based shelving system for layout prototyping and modular storage design.

// Modular Shelf Grid
// A parametric, grid-based shelving system for layout prototyping and modular storage design.
// Categories: Maker

// This model generates a configurable number of uniform shelf modules,
// stacked in a grid defined by row and column counts.
// Each module is:
// - A rectangular box composed of two vertical side panels and two horizontal shelves
// - Open at the front for accessible storage
// All dimensions and counts are parametric, enabling rapid iteration
// for uses such as built-ins, modular wall storage, or retail shelving.

@settings(defaultLengthUnit = m, kclVersion = 1.0)

columnCount = 5 // number of shelf modules in horizontal direction (X axis)
rowCount = 3 // number of shelf modules in vertical direction (Z axis)


// --- Module Dimensions ---
unitWidth = 0.4 // external width of each module
unitHeight = 0.5 // external height of each module
unitDepth = 0.4 // depth from front to back


// --- Geometry Parameters ---
panelThickness = 0.02 // thickness for side walls and shelves
sidePanelOffset = unitWidth - panelThickness // spacing between left and right panels


// --- Shelf Geometry ---
shelfThickness = panelThickness // same as panel thickness
shelfWidth = unitWidth - (panelThickness * 2) // fits between side panels
shelfDepth = unitDepth // full shelf depth
shelfSpacing = unitHeight - shelfThickness // position of top shelf above bottom


// --- Reference Plane ---
basePlane = startSketchOn(XY)

// --- Side Panels ---
// Left and right vertical panels forming module sides.
sidePanelProfile = startProfile(basePlane, at = [-unitWidth / 2, 0])
  |> yLine(length = -unitDepth)
  |> xLine(length = panelThickness)
  |> yLine(length = unitDepth)
  |> close()
  |> patternLinear2d(
       %,
       instances = 2,
       distance = sidePanelOffset,
       axis = [1, 0],
     )
sidePanels = extrude(sidePanelProfile, length = unitHeight)

// --- Shelf Boards ---
// Two shelves: one at the bottom, one at the top of each module.
firstShelfSketch = startSketchOn(basePlane)
firstShelfProfile = startProfile(firstShelfSketch, at = [-shelfWidth / 2, 0])
  |> yLine(length = -shelfDepth)
  |> xLine(length = shelfWidth)
  |> yLine(length = shelfDepth)
  |> close()
firstShelf = extrude(firstShelfProfile, length = shelfThickness)

// Stack two shelf boards inside the unit (bottom and top)
shelves = patternLinear3d(
  firstShelf,
  instances = 2,
  distance = shelfSpacing,
  axis = [0, 0, 1],
)

// --- Grid of Shelf Modules ---
// Repeats the basic shelf module (side panels + two shelves)
// in both horizontal and vertical directions to form a full grid.


modularShelfArray = patternLinear3d(
       [sidePanels, shelves],
       instances = columnCount,
       distance = unitWidth,
       axis = [1, 0, 0],
     )
  |> patternLinear3d(
       %,
       instances = rowCount,
       distance = unitHeight,
       axis = [0, 0, 1],
     )


Modular Shelf Grid

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