Machining mirrors with CNC can be a tricky process, but with the right techniques and equipment, it is possible to achieve a high-quality mirror finish. Here are some tips to help you get started:

## 1. Choose the Right Tooling

To machine mirrors, you will need specific tooling that is designed for this purpose. Diamond-tipped tools are often used for mirror finishing, as they are extremely hard and can produce a very fine finish. Additionally, using a single-point cutting tool can help to minimize tool marks and achieve a smoother finish.

## 2. Pay Attention to Speeds and Feeds

When machining mirrors, it is important to use the right speeds and feeds to achieve the desired finish. This will depend on the material being machined, as well as the type of tooling being used. Generally, slower speeds and feeds are recommended for mirror finishing to avoid creating scratches or other surface imperfections.

## 3. Use the Right Coolant

Coolant can have a big impact on the surface finish of the material being machined. For mirror finishing, it is important to use a coolant that will not leave residue or stains on the surface. Water-soluble coolants are often recommended for this purpose.

## 4. Check for Surface Imperfections

After machining, it is important to carefully inspect the surface of the material for any imperfections or defects. Even small scratches or dings can impact the overall finish of the mirror. If any imperfections are found, they should be addressed before continuing with the finishing process.

With these tips in mind, you should be able to achieve a high-quality mirror finish when machining with CNC. As with any machining process, it may take some trial and error to find the right settings and techniques for your specific application.