Surf & SUP / Paddle Board Rack for Stanchions & Guardrail (Parametric, 3D Print)

🔖 Art. ML3D_0049

Parametric board rack by MarineLab3D — a two-piece clamp that fits around a stanchion or guardrail tube, with a sturdy L-shaped arm and a slotted tab to lash the board with a strap. Suitable for both **surfboards and SUP / paddle boards**. Use a pair of brackets, size them, preview in 3D, and after purchase receive your STL. 🛟 Two-piece collar that bolts around the stanchion/guardrail — no drilling of the rail. 💪 Solid Ø20 mm L-arm (95° elbow, soft bend, reinforced base) — holds the board clear of the lifelines. 🪢 Slotted end tab (3 mm) for a securing strap/cord. ⚓ To lock the board in place, run a rope — or better a textile webbing strap — through the arm's slot and around the lifelines: the board is held snugly between the arm and the lifelines. 📏 Fully adjustable: stanchion Ø, arm length and height — fits most rails and board sizes. 🔩 **Hardware (per bracket):** 2× **M5** bolts with round/socket (Allen) head + 2× **M5** hex nuts. The hex-nut seat is moulded into the arm collar (nut stays captive) and the round head seat is on the opposite collar — just tighten with an Allen key. Suggested length M5 × 30–35 mm. Use **A4/316 stainless** for marine use. 🧵 **Print materials (load-bearing — use a carbon-filled filament):** - **PA612-CF — ★ best** (toughest, UV & water resistant, low creep) - **PETG-CF — good** (easy, good stiffness/UV) - **ASA-CF — good** (excellent UV/outdoor, stiff) Print specs: 0.2 mm layers, 4+ perimeters, 40%+ infill, hardened nozzle for CF. Prints as two parts. Use "Customize dimensions" to set stanchion Ø, tube length and height, preview in 3D, then receive your STL after purchase.

Related designs: Boat Cleat — Custom Length, Threaded Holes or Studs (3D Print), Deck Rope Organizer / Fairlead — 1–5 Low-Friction Eyes (Parametric, 3D Print), Double C-Clip Hook — Twin Swivel Clips (Parametric, 3D Print)

Disclaimer. MarineLab3D sells digital 3D files, not finished parts. The strength, fit and safety of the printed part depend on your printer, material, settings and assembly, which are outside our control. Verify all dimensions before printing, use the recommended material and inspect every print. Provided “as is” without warranty; to the maximum extent permitted by law MarineLab3D is not liable for any damage, loss or injury arising from their use. Not certified marine equipment. Full Disclaimer & Terms of Use.

⚠ Load-bearing / pressure part. Suggested loads or pressures are indicative estimates for a well-printed part in the recommended material, not guarantees. Run your own load/pressure test before relying on it. Do not use for life-safety or critical applications (lifelines, harness/tether attachment, standing rigging, steering, gas or fuel systems) unless independently tested and certified by a qualified professional.