There are several reasons why CNC retrofitting can be a better option than buying a new machine. Here are a few:

1. Cost: Retrofitting an existing machine can be more cost-effective than purchasing a brand new CNC machine. Retrofitting typically involves upgrading the control system, replacing or refurbishing certain components, and adding new features, which is generally less expensive than buying a whole new machine.

2. Customization: Retrofitting allows for customization according to specific requirements. You can choose the components and features you want based on your unique needs. This level of customization is not always possible when buying a new machine as it may come with pre-defined features and specifications.

3. Familiarity: Retrofitting allows you to work with a machine that your operators are already familiar with. This reduces the need for extensive training and the learning curve associated with using a new machine. Familiarity can lead to smoother and faster implementation of the retrofit, minimizing downtime.

4. Environmental Impact: Opting for a retrofit can be more environmentally friendly. By upgrading an existing machine, you reduce the need for manufacturing new components, which can help in reducing waste and conserving resources.

5. Machinery Performance: Retrofitting can improve the performance and capabilities of an older machine. Upgrading the control system, adding new features, or improving the accuracy and precision of the machine can enhance productivity, efficiency, and overall performance.

However, it is important to consider the condition and suitability of the existing machine before deciding whether to retrofit or buy new. Retrofitting is not always the best option in every situation, so a thorough evaluation should be conducted to make an informed decision.