Chemical etching, also known as photo etching or photo chemical machining, is an ideal solution for producing complex and precision parts with fine details. This process uses a chemical reaction to selectively remove material from a metal sheet, resulting in parts with burr-free edges and tight tolerances.

Chemical etching can be applied to a wide range of metals, each with unique properties suitable for different applications:

• Stainless Steel
• Carbon Steel
• Brass
• Copper
• Aluminum
• Titanium
• Inconel
• Hastelloy

The choice of material depends on factors such as required strength, corrosion resistance, electrical conductivity, and cost considerations.

The chemical etching process involves several key steps:

1. Design and preparation of photo tools
2. Cleaning and preparation of metal sheets
3. Application of photoresist
4. Exposure to UV light through photo masks
5. Development to remove exposed areas
6. Etching in chemical solutions
7. Stripping of remaining photoresist
8. Quality inspection and finishing

This process allows for high precision and repeatability, making it suitable for both prototyping and production runs.

The cost of chemical etching depends on several factors:

• Material type and thickness
• Part complexity and size
• Volume requirements
• Finishing requirements

Generally, chemical etching offers significant cost advantages for complex parts compared to traditional machining methods, especially for low to medium volume production.