About this 3D model

This is a highly portable and expandable system used to create tracking shots with a video camera. My aim was to create a dolly system that was simple to build with basic tools.I have designed it around t slot extrusion which allows easy modification to the parts and I hope that other people will design new components for the system.I will be adding new parts (end stops, adjustable legs, camera brake, etc) very soon. The design of the carriage will also change as I improve the design. Please leave feedback in the comments section below