Songyi automatic hook

size

Dimension (L x W x H): 30 cm x 10 cm x 2 cm

Material

• Top & bottom blocks: High-density ABS or HIPS plastic, matte white finish

• Tensegrity “legs”: 4–6 strands of ultra-strong Dyneema or Spectra fishing line (Ø 1–1.5 mm, breaking strength >80 kg each)

• Hidden magnets: 4–8 pieces of N52 neodymium ring/disc magnets (electroplated Ni-Cu-Ni)

• Center disc: Aluminum alloy + acrylic light guide plate (for the glowing ring effect)

• Base internals: Small PCB, 5–12 V electromagnet coil (optional active levitation versions), counterweights

Production Steps

• Injection-mold the top and bottom ABS blocks in two separate molds; cool and eject.

• CNC-mill precise cavities inside both blocks for magnet placement and wire routing.

• Glue N52 neodymium magnets into the cavities with industrial epoxy (exact polarity and distance calibrated so they repel perfectly).

• Thread and pre-tension the invisible Dyneema/Spectra lines through tiny side holes; each line is knotted or crimped so the structure becomes rigid once the magnets push the blocks apart.

• Assemble the center LED ring: solder SMD LEDs onto a small PCB, insert into aluminum+acrylic light-guide disc, connect USB-C or DC power cable.

• Fine-tune tension by hand — workers adjust each fishing line in 0.5 mm increments until the top floats perfectly level with 3–4 cm gap and can support 3–5 kg without touching the base.

• Final quality check: spin test, weight test (place phone or book on top), glow test, and 24-hour stability test.

• Pack with USB cable, manual, and spare fishing line.