Deferred and future work
=======================

Purpose
-------

- Explicitly document features and concepts that are **not part of the current build**
- Prevent scope creep
- Preserve design intent for later development phases

Motion and feedback upgrades
----------------------------

- Closed-loop servo drives on linear axes
- Dual-loop control using external feedback
- Glass scale integration for linear axes
- Replacement of stepper-based motion system

Drive electronics
-----------------

- Custom servo inverter development
- Evaluation of GaN, SiC, or IGBT-based power stages
- Unified drive hardware for multiple machine projects

Additional axes
---------------

- 4th axis integration
- 5th axis integration
- Simultaneous multi-axis machining capability

Advanced compensation strategies
--------------------------------

- Thermal compensation of machine structure
- Advanced force-based compensation
- Higher-order compliance models
- Integration of additional observers

Manufacturing and implementation
--------------------------------

- Detailed CAD models
- Manufacturing drawings
- Assembly procedures
- Calibration procedures
- Validation and acceptance testing

Documentation expansion
-----------------------

- Implementation-level documentation
- Firmware and software architecture documentation
- Maintenance documentation
- Operating procedures