Zippy cable trolley

# Zippy - The Symmetrical Filament-Rider Cable Trolley

Meet **Zippy**, an ultra-lightweight, smooth-rolling trolley designed to travel along a unique track: **a taut strand of 3D printer TPU filament!** Instead of requiring bulky ropes or expensive steel cables, Zippy is engineered to use standard flexible filament as its guide wire. The inherent high friction and flexibility of the TPU line give the trolley incredible grip, silent operation, and zero slippage, making it an excellent choice for mini camera sliders, desktop automation, or lightweight rigging experiments.

### 🔄 Fully Symmetrical Design
Zippy features a completely symmetrical chassis equipped with integrated **V-groove wheels** to perfectly cradle the filament track. Because it is uniform from top to bottom, the trolley can easily be flipped upside down depending on your mounting needs. Use the integrated lower side openings to tie off a suspended load, or print your own custom counterweight to keep the rig balanced and