The Bondtech INDX is a modular, mechanical tool-changing platform for FDM/FFF 3D printers. Unlike filament-swapping systems, INDX physically swaps entire tool assemblies — nozzle, heat break, and filament path — enabling true multi-material, multi-nozzle, and multi-application printing.

This repository is the integration reference for hardware designers and printer builders who want to incorporate INDX into their own platforms.

Each INDX tool is a self-contained print head that docks and undocks from the toolhead carriage via a Y-axis approach. The carriage carries a motorised latch — the Dynamic Dual Drive — that locks and releases tools mechanically without additional wiring per tool.

Key properties:

• Multiple tools on a single carriage (number depends on printer size)
• Tool swap is fully mechanical; no per-tool electronics or connectors to mate
• The latch is driven by the main extruder motor; locking and unlocking are extruder moves
• Each tool has its own XY and Z offset, calibrated once and stored in firmware

CAD/INDX_simplified_1.1.step contains a simplified assembly of the INDX system suitable for clearance checks, dock geometry layout, and integration modelling.

• Integration overview — dock geometry, tool positions, and what to design around