https://www.crealitycloud.com/model-detail/64fd6f31cb4802a2e7effa35 Concept: The flat surface of this starfish with water as medium creates a strong vacuum grip when pressed against a non-porous smooth surface. Theoretically the model can hold up to 11kgs and practically tested up to 1kg which is more than 100times it’s weight. Commercial license: You can print and sell this model. Benefits: Safe and secure, Using fluorescent (Glow in the dark) material for hook will give an advantage of finding keys in the dark, Good for temporary use, No need to drill hole / use adhesive. Note: The print must be on smooth surface using glass bed is preferred but not compulsory, use high bed temperature to avoid glue stick/adhesive. Make sure that there are no air bubbles after pressing against wall. Materials: Star fish: Any flexible resin/Filament – TPU, Nylon, E.T.C Hook: strong resin / Filament - PLA, PETG, ABS, E.T.C, 3D printing settings: Slicer software: Creality slicer, Printer: FDM / RESIN, Retraction: 5mm speed 60, Nozzle Temp: minimum 190 to 210 C for PLA / minimum 200 to 230 C for TPU Bed Temperature: 90 C (no glue stick/adhesive needed) Infill: Minimum 8%, Print in place, Print speed: 25 Support: No supports needed, Layer height: 0.2, (use high diameter nozzle for fast printing) Build plate adhesion: brim at least 1mm, Print time: Star fish: around 30minutes, Hook: 2 minutes. The hook is a snap fit no adhesive required for assembling. Thank you, Have a wonderful day. Regards, Sigma Designers.