Need to mount a shelf, support a worktop, or build a strong 90° corner for your DIY furniture?
This parametric shelf bracket was born out of a real need — I had to mount shelves securely, and I couldn’t find a bracket that met my standards.
So I built this OpenSCAD project to be fully customizable, offering total control over dimensions, mounting holes, reinforcements... and more.

🧰 Perfect for:

• Mounting shelves in your workshop, kitchen, office, or garage
• 90° joints in custom furniture or modular builds
• Structural brackets for 3D-printed furniture or tool walls
• Strong supports for DIY shelving systems

✅ No supports needed

This model is entirely support-free in every configuration. Just slice and print!

📐 Fully customizable parameters (OpenSCAD)

All parameters can be tweaked via the OpenSCAD customizer or by editing the code.

🔷 Shape & Dimensions

• Bracket shape → triangular or L_shaped
• Wall projection → 20–150 mm
• Bracket width → 15–80 mm
• Wall height → 30–120 mm

🧱 Thicknesses

• Wall thickness → 3–15 mm
• Shelf thickness → 3–15 mm

🔩 Screw clearance

• Material under wall screw head → 0–10 mm
• Material under shelf screw head → 0–8 mm

🧱 Wall mounting (optional)

• Wall mounting holes can be enabled
• Hole count → 1–6
• Shaft diameter → 3–12 mm
• Head diameter → 6–20 mm
• Conical head clearance → optional, 82° to 120°, adjustable depth

🪵 Shelf mounting (optional)

• Shelf mounting holes can be enabled
• Hole count → 0–4
• Shaft diameter → 3–8 mm
• Head diameter → 5–15 mm
• Edge distance → 5–20 mm
• Conical head clearance → optional, 82° to 120°, adjustable depth

🦾 Reinforcement Ribs (optional)

• Ribs can be added to increase structural strength
• Rib count → 0–5
• Rib thickness → 2–20 mm
• Tapered? → yes/no, adjustable with ratio 0 to 0.9
• Ribs always reach the full height of the bracket

🧱 3D Printing Tips

🟧 L-shaped version

• PETG, ASA or ABS recommended for structural or hot environments
• Increase WALL_THICKNESS and SHELF_THICKNESS for extra rigidity
• Enable reinforcement ribs for greater strength
• Use at least 3 walls to avoid lateral delamination
• Infill: 40–60%, best with gyroid or cubic patterns

🟩 Triangular version

• Very strong even with PLA and standard settings
• Ideal for indoor use and light to medium loads
• Infill: 30–40% (20% may be enough for light-duty)
• Ribs are optional but helpful

⚙️ General print settings

• Layer height: 0.2 mm (or 0.28 mm for faster prints)
• Wall count: 3+
• Infill pattern: Gyroid, Cubic, Grid, Lines
• Materials: PLA, PETG, ASA, ABS depending on usage

🖱️ Every setting is adjustable via sliders.
📦 No supports required — ever.