The Ultimate Parametric Floating Shelf System

Fully Parametric Modular Floating Shelf System

A professional-grade, infinitely expandable floating shelf system featuring tool-free assembly with precision X-spline connectors, binary puzzle joints for split printing, and multiple corner configurations. Print any size shelf on any printer — the intelligent split system automatically handles pieces larger than your build plate.

✨ Key Features

Fully Parametric — Customize every dimension: shelf size, depth, height, bracket width, prong count, and more
Modular & Expandable — Connect unlimited shelves in straight runs or L-shaped configurations
Smart Split System — Automatic puzzle-joint splitting for printing oversized pieces
Three Corner Styles — Diamond, Triangle, and Pie configurations for inside corners
Insertable Lip System — Snap-in lips with rounded, chamfered, or straight profiles
Hidden Hardware — Countersunk screw holes in brackets for clean aesthetics
Print-Optimized — Designed with proper tolerances and chamfered entries for reliable printing

📁 File Guide

🔧 Connectors (Required for Multi-Shelf Setups)

File	Purpose
FloatingShelf_Spline.stl	X-Spline Connector — Joins adjacent shelf segments together. Print one per shelf connection. Slides into matching X-shaped channels on shelf sides.
FloatingShelf_SplitInserts.stl	Split Alignment Inserts — Required when printing shelves or brackets in two halves. These X-profile dowels align and lock the split pieces together. Print the quantity shown in the filename or based on your parameter settings.

📐 Straight Shelf Components

Shelves — Print flat (top surface down)

File	Use Case
Shelf_Standalone_AllLips	Single shelf with lip grooves on all applicable sides
Shelf_Standalone_NoLip	Single shelf, no lip grooves
Shelf_EndLeft_AllLips/NoLip	Left-most shelf in a connected run (spline slot on right only)
Shelf_EndRight_AllLips/NoLip	Right-most shelf in a connected run (spline slot on left only)
Shelf_Middle_AllLips/NoLip	Interior shelf in a connected run (spline slots on both sides)

Bracket

File	Print Orientation
FloatingShelf_Straight_Bracket.stl	Print with backplate flat on bed. The prongs will print pointing upward.

💎 Corner-Diamond Components

The Diamond corner creates a clean 90° inside corner with an elegant angled front edge. Ideal for L-shaped desk setups, entertainment centers, and corner workstations.

⚠️ PRINT ORIENTATION: Corner Diamond shelves must be printed VERTICALLY (standing on the back wall edge) for proper strength. The angled geometry requires this orientation.

Shelves (Left/Right variants for mirrored corners)

File Pattern	Description
Shelf_Standalone_*	Single corner unit, no side connections
Shelf_EndLeft_*	Corner at left end of a shelf run
Shelf_EndRight_*	Corner at right end of a shelf run
Shelf_Middle_*	Corner between two shelf runs (both sides have spline slots)

Supporting Parts

File	Purpose
V-Bracket_Left/Right.stl	V-shaped wall bracket with prongs on both angled arms. Mounts in the corner.
SplitInserts.stl	Alignment dowels for split-printed diamond shelves

🥧 Corner-Pie Components

The Pie corner creates a smooth, curved 90° inside corner — perfect for high-traffic areas where you want to eliminate sharp edges.

⚠️ PRINT ORIENTATION: Corner Pie shelves must be printed VERTICALLY for structural integrity of the curved profile.

File	Purpose
Shelf_Standalone_AllLips.stl	Curved corner shelf with lip groove on arc edge
Shelf_Standalone_NoLip.stl	Curved corner shelf, no lip groove
V-Bracket.stl	Corner bracket matching the pie profile

📐 Corner-Triangle Components

The Triangle corner provides a simple, minimalist 90° inside corner with a straight diagonal front edge.

⚠️ PRINT ORIENTATION: Corner Triangle shelves must be printed VERTICALLY due to the angled geometry.

File	Purpose
Shelf_Standalone_AllLips.stl	Triangle corner with lip groove on diagonal edge
Shelf_Standalone_NoLip.stl	Triangle corner, no lip
V-Bracket.stl	V-shaped corner bracket

👄 Insertable Lips

Snap-in edge guards that friction-fit into shelf grooves. Print flat.

File	Fits
Straight_Lip_Front.stl	Front edge of straight shelves
Straight_Lip_Left.stl	Left edge of straight shelves
Straight_Lip_Right.stl	Right edge of straight shelves
Corner-Diamond_Lip_Front.stl	Diagonal edge of diamond corners
Corner-Triangle_Lip_Front.stl	Diagonal edge of triangle corners
Corner-Pie_Lip_Front.stl	Curved edge of pie corners

🖨️ Print Settings

Recommended Settings

Parameter	Value
Layer Height	0.2mm
Infill	15-20% for shelves, 15% for brackets, rectilinear
Walls	4 perimeters
Supports	Required for Vertical parts only

Print Orientations Summary

Component Type	Orientation
Straight Shelves	Flat (top surface on bed)
Corner Shelves (ALL types)	VERTICAL (back edge on bed)
Straight Brackets	Backplate flat on bed, prongs up
V-Brackets	Backplate flat on bed
Lips	Flat
Splines & Inserts	As exported (lengthwise)

🔩 Assembly Guide

Single Straight Shelf

Mount the Straight Bracket to wall using appropriate anchors (countersunk screws)
Slide the Shelf onto the bracket prongs
(Optional) Snap Lips into edge grooves

Connected Shelf Run

Mount brackets at each shelf position
Place first EndLeft shelf on bracket
Insert X-Spline connector into right channel
Slide Middle shelf onto its bracket while engaging spline
Repeat for additional middle sections
End with EndRight shelf

L-Shaped Configuration

Mount Corner V-Bracket in the corner
Place Diamond/Pie/Triangle Corner Shelf on V-bracket
Insert splines and connect straight shelf runs on each arm

Split-Printed Parts

Print both halves
Insert Split Inserts into one half's channels
Press halves together — puzzle joints self-align

📏 Customization (OpenSCAD)

The included .scad file lets you generate custom configurations:

Key Parameters:

shelf_width / shelf_depth / shelf_height — Main dimensions
corner_style — "diamond", "pie", or "triangle"
corner_angle — Adjust for non-90° corners (45°-135°)
left_joint / right_joint — "x_spline" or "none"
lip_front/left/right — Enable lip grooves per edge
split_percent — Where to split for oversized prints
tolerance — Adjust fit (default 0.4mm works for most printers)

💡 Tips

Test fit first — Print a short spline segment and test channel fit before committing to full shelves
Tolerance tuning — If joints are too tight, increase tolerance by 0.05mm increments
Corner strength — The vertical print orientation for corners isn't optional — horizontal printing creates weak layer lines across load-bearing geometry
Wall anchors — Use appropriate anchors for your wall type. Brackets have countersunk holes for #8 or M4 screws

📋 Bill of Materials (per shelf)

Part	Quantity
Shelf segment	1
Bracket	1
X-Spline	1 per connection
Split Inserts	2 per split (if applicable)
Wall screws	2-4 per bracket
Lips	As desired

Questions? Drop a comment and I'll help you configure the perfect setup for your space!