Etched micro holes are tiny, highly controlled perforations made through chemical etching processes rather than mechanical drilling, punching, or laser cutting.

Chemical etching uses a controlled chemical reaction to selectively remove metal in specific areas, allowing for:

• Extremely small hole diameters (as small as 25 microns)

• Precise positioning and tight hole patterns

• Consistent hole shapes and sizes

• No burrs, deformation, or heat-affected zones

At TMN, our photo chemical etching methods allow for the creation of complex hole arrays and ultra-fine perforations across a wide variety of metal types and thicknesses.

Advantages of TMN’s Micro Hole Etching

Choosing TMN Metal Parts Fabrications means benefiting from significant technical and economic advantages:

1. Ultra-Precise Micro Holes

Our chemical etching process achieves incredibly fine holes with:

• Diameters starting from 0.025 mm

• Positioning accuracy up to ±0.01 mm

• Smooth, burr-free edges

We can create single holes or dense arrays, ensuring every feature is consistently accurate across the entire part.

2. No Heat or Mechanical Stress

Unlike laser drilling or mechanical punching, photo chemical etching does not generate heat or stress, preserving:

• Material strength

• Electrical conductivity

• Magnetic properties

• Flatness and dimensional stability

This makes etched micro-hole parts perfect for high-reliability industries where even microscopic damage cannot be tolerated.

3. Freedom of Design

Because there are no tooling stresses, TMN offers virtually unlimited design flexibility:

• Variable hole shapes (round, square, slotted)

• Complex patterns and custom configurations

• Fine features on thin and delicate materials

We help turn your complex micro hole designs into manufacturable realities — quickly and efficiently.

4. High Repeatability and Quality

Our advanced manufacturing controls ensure that every part, whether a prototype or part of a high-volume batch, meets strict quality standards with exceptional repeatability.

5. Cost-Effective for Prototypes and Large Volumes

Since chemical etching uses photo tools instead of hard dies, tooling costs are low. Design changes are fast and affordable, making it ideal for prototyping and rapid development as well as full-scale production.

Applications for Etched Micro Hole Parts

Our micro-hole parts serve critical functions across various high-tech industries:

Electronics

• EMI/RFI shielding with precision ventilation

• Microfilters for sensor and communication systems

• Battery electrode supports

• Heat dissipation structures

Medical Devices

• Microfluidic plates

• Filtration and separation screens

• Drug delivery components

• Precision surgical tools

Aerospace and Defense

• Fuel injector filters

• Pressure equalization components

• Lightweight structural panels

• Optical aperture masks

Automotive

• Fuel cell plates with controlled gas diffusion

• Microfiltration systems for fluids and gases

• Sensor covers with precise airflow control

Industrial

• Fine sieves for material separation

• Nozzles and spray control devices

• Acoustic panels with controlled perforations

No matter the industry, TMN’s etched micro-hole parts deliver the precision, reliability, and performance you need.

TMN’s Etching Process for Micro Holes

At TMN, we follow a careful, step-by-step process to create your etched parts with micro holes:

1. Design and Photo Tooling:
   We convert your CAD drawings into high-precision photo masks that define the shape, position, and size of every hole.

2. Metal Preparation:
   The selected metal sheet is meticulously cleaned to ensure a flawless etching process.

3. Photoresist Coating and Exposure:
   A light-sensitive resist is applied to the metal and exposed to UV light through the photo mask, hardening the desired pattern.

4. Developing:
   The unexposed areas are removed, leaving bare metal where etching will occur.

5. Chemical Etching:
   A controlled etchant precisely removes metal from the exposed areas, forming the micro holes.

6. Final Cleaning and Inspection:
   After etching, the parts are cleaned, inspected for quality, and prepared for delivery.

Every step is governed by TMN’s stringent quality assurance standards, ensuring your parts are accurate, clean, and ready to perform.

Materials for Etched Micro Hole Parts

We work with a wide range of metals, including:

• Stainless steel

• Nickel and nickel alloys

• Copper and copper alloys

• Brass

• Aluminum

• Titanium

• Specialized high-temperature alloys

TMN’s experts can advise you on the best material choice based on your application, desired hole size, and performance needs.

TMN’s Commitment to Excellence

At TMN Metal Parts Fabrications, quality is built into every part we make. Our facilities are ISO-certified, and our production process follows rigorous inspection protocols at every stage.

We are committed to:

• Zero-defect manufacturing

• Fast turnaround times

• Flexible solutions tailored to your needs

• Competitive pricing for prototyping and production

Our dedicated team is here to support you from concept to completion, ensuring that every etched micro hole part meets — or exceeds — your expectations.

Partner with TMN Metal Parts Fabrications

When it comes to etched parts with micro holes, precision and experience matter. At TMN, we combine cutting-edge technology with years of expertise to deliver parts that fuel innovation across industries.