Parawing Hook and Harness

Custom Built Hook and Harness line attachment for BRM Kanaha bar (23mm Diameter) Ozone Stash Belt (40 x 5 mm), & 4mm Dyneema line.

*some of the photos are of the thicker prototype. Final print is 10mm thick.  

Print Settings — Tether Hook (PETG)

• Material: PETG (avoid PLA — degrades in UV/saltwater; PETG-CF requires a hardened steel nozzle)

• Nozzle temp: 250–255°C

• Bed temp: 70–80°C

• Fan speed: 20–30% (lower than PLA default for better layer fusion)

• Layer height: 0.2mm

• Wall loops: 6

• Top/bottom shell layers: 6, 100% density

• Infill: 80% density, Gyroid pattern

• Outer wall speed: 60mm/s

• Inner wall speed: ~150mm/s

• Infill speed: ~130mm/s

• Seam: Smart scarf seam application enabled, scarf joint for inner walls enabled

• Brim: Auto, 5mm width (recommended — PETG warps more than PLA)

• Orientation: Print flat, as oriented in the provided file — this loads the part in-plane rather than across layer lines and is critical for strength; do not reorient

Post-print (recommended):

• Pull-test each part to failure before trusting it with real load

• Apply UV-rated clear coat for extended sun exposure

• Design margin: rated for 75–100 lbs dynamic load with a 3–5x static safety factor.