Photochemical Etching: The Process Behind Precision
Photochemical etching (PCE) is a multi-step process that produces mesh with accuracy that woven or punched mesh cannot match:
Procedure | Explanation | Result |
1. Material Preparation | Metal sheet selected and cleaned thoroughly | Clean surface ready for coating |
2. Photoresist Coating | Photosensitive resist applied to both sides | Even coating for precision exposure |
3. Exposure | Phototool (mask) aligned and UV light applied | Pattern transferred to resist |
4. Development | Unexposed resist washed away | Pattern visible on metal surface |
5. Etching | Chemical solution dissolves exposed metal | Precise openings created |
6. Stripping | Remaining resist removed | Clean, flat, burr-free mesh |
Key advantages of photochemical etching over woven mesh:
Advantages | Explanation |
No Burrs | Chemical etching leaves perfectly smooth edges with no mechanical burrs |
Flat Surface | No wire intersections — mesh is completely flat on both sides |
Exact Tolerances | Tolerances as tight as ±0.01mm for critical applications |
Complex Patterns | Any hole shape (round, square, slots, diamond, custom logos) is possible |
No Stress/Deformation | Chemical process does not deform the material |
Consistent Openings | Every hole is exactly the same size across the entire sheet |
Thin Materials | Can etch mesh as thin as 0.02mm — impossible with woven mesh |
Specifications
Available Materials
Material | Applicable Scenarios | Features |
Stainless Steel 304 | General industrial, medical, food | Good corrosion resistance, cost-effective |
Stainless Steel 316 | Marine, medical implant, chemical | Superior corrosion resistance |
Copper | Electronics, conductive applications | Excellent electrical conductivity |
Brass | Decorative, low-friction applications | Good formability, aesthetic appeal |
Nickel | Battery, electronics, high-temp | Excellent corrosion resistance, good conductivity |
Other Alloys (upon request) | Specialized applications | Including Monel, Inconel, Kovar |
Standard Specifications
parameter | Scope/Options |
Material Thickness | 0.02mm – 1.0mm |
Hole Size | From 0.03mm (30 microns) |
Hole Tolerance | ±0.01mm – ±0.05mm (depending on thickness) |
Open Area | 5% – 80% (custom) |
Hole Shapes | Round, square, slot, diamond, hexagon, custom patterns |
Sheet Size | Up to 500mm x 600mm (custom available) |
Custom Patterns | Any design according to customer drawings |
Note: If you don't see your required specification above, contact us. We manufacture to your exact requirements.






Feature | Etched Mesh | Woven Wire Mesh |
Manufacturing Process | Photochemical etching dissolves material | Wires are woven together mechanically |
Surface Flatness | Perfectly flat on both sides | Slight surface variations at wire intersections |
Hole Shape | Any shape (round, square, slot, custom) | Only square (in plain weave) or slotted (in Dutch weave) |
Hole Tolerance | ±0.01mm – ±0.05mm | Limited by wire diameter and weave consistency |
Burr-Free | Yes — smooth edges with no burrs | Can have slight burrs from wire cutting |
Wire Shift | No shifting — pattern is fixed | Wires can shift during use or handling |
Minimum Hole Size | Down to 0.03mm (30 microns) | Limited by weave capability |
Complex Patterns | Unlimited — any design possible | Limited to weave patterns |
Cost | Higher (precision process) | Lower (mass production) |
Best For | High-precision applications — medical, aerospace, electronics, micro-screening | General screening, filtration, separation |
Verdict: If your application demands exact hole tolerances, burr-free surfaces, or custom hole shapes, choose Etched Mesh. If you need cost-effective general screening, Woven Mesh is more economical and available in a wider range of standard sizes.
Available Forms
We supply etched mesh in the following forms:
Product Form | Explanation | Suitable scenarios |
Standard Sheets | Flat sheets with custom hole patterns | General precision filtration, screening |
Custom Shapes | Cut to specific dimensions with precision | OEM components, equipment inserts |
Roll-to-Roll Etched Mesh | Continuous etching for high-volume applications | Electronic shielding, battery mesh, high-volume production |
Custom Fabricated Parts | Formed, shaped, or assembled components | Medical device components, aerospace parts |
Applications of Etched Mesh
Our etched mesh is used across precision-critical industries:
Industry | Specific applications | Why use etching mesh? |
Medical & Healthcare | Medical device filters, surgical instrument components, IV filtration, drug delivery systems | Burr-free, biocompatible, exact tolerances |
Aerospace & Defense | Fuel atomization screens, hydraulic filters, air intake screens, sensor components | High reliability, tight tolerances, aerospace-grade materials |
Electronics | EMI/RFI shielding, battery current collectors, display screens, speaker grilles, sensor meshes | Flat surface, precise openings, thin material capability |
Automotive | Fuel injection screens, airbag components, sensor meshes, brake system filters | Consistent openings, durability, heat resistance |
Pharmaceutical | Tablet coating screens, powder sieves, API filtration screens, sterile filtration | Burr-free, clean, exact hole sizes |
Semiconductor | Wafer handling screens, cleanroom filters, precision screening | Ultra-precision, contamination-free |
Chemical Processing | Catalyst screens, polymer filtration, chemical resistant filters | Corrosion resistance, precise openings |
Printing & Graphics | Inkjet printer filters, screen printing meshes, toner sieving | Consistent openings, smooth surfaces |
Food & Beverage | Juice extraction screens, food processing filters, micro-sieving | Clean, FDA-compliant materials |



What is the smallest hole size you can etch?
What is the maximum sheet size?
Can you etch custom hole patterns?
What materials can you etch?
Do you provide samples?
What is the typical tolerance for hole size?
Do you provide material test reports?
Photo etched mesh is a precision metal mesh manufactured through a chemical photochemical etching process rather than traditional weaving or mechanical punching. Unlike woven mesh, where wires are interlaced and may produce uneven openings, photo etched mesh is created directly from a flat metal sheet using photoresist imaging and controlled chemical etching.
This manufacturing method offers exceptional dimensional accuracy and produces burr-free openings with smooth edges. Because there is no mechanical stress during production, the finished etched mesh remains flat without distortion, making it particularly suitable for high-precision filtration, aerospace components, electronic shielding, battery technology, and medical devices.
Compared with woven mesh, photo etched mesh also allows engineers to design almost any aperture geometry, including square holes, slots, hexagonal patterns, circles, or fully customized designs. Hole size, pitch, and open area can all be accurately controlled according to project requirements.
Another significant advantage is repeatability. Every sheet can be manufactured with consistent tolerances, which is essential for automated production lines and demanding industrial applications.
For industries where micron-level accuracy, corrosion resistance, and stable performance are critical, photo etched mesh has become the preferred alternative to traditional woven mesh.
Choosing the right custom etched mesh supplier is about more than finding the lowest price. A reliable manufacturer should combine precision production, engineering expertise, strict quality control, and dependable delivery to ensure your products perform consistently in real-world applications.
Start by evaluating the supplier's manufacturing capabilities. An experienced etched mesh manufacturer should be able to produce complex aperture patterns, tight tolerances, and a wide range of customized sizes and thicknesses. Whether your project requires stainless steel, nickel, copper, brass, or other specialty alloys, the supplier should offer professional material recommendations based on your application, operating environment, and performance requirements.
Quality assurance is equally important. Every batch of etched mesh should undergo rigorous inspections, including dimensional measurement, aperture accuracy verification, flatness checks, and visual inspections. Consistent quality helps reduce assembly issues, improve product reliability, and minimize production downtime.
Engineering support is another key factor. A knowledgeable supplier can review your drawings, recommend design improvements, optimize open-area ratios, and suggest cost-effective manufacturing solutions before production begins. This collaborative approach shortens development cycles and helps avoid costly redesigns.
At Jinzehong, we combine years of precision metal etching experience with advanced photochemical etching technology to deliver custom photo etched mesh for customers worldwide. Our engineering team works closely with clients from prototype development through mass production, providing tailored solutions for filtration, electronics, aerospace, medical devices, precision instruments, and other demanding industries.
Our advantages include:
Partnering with Jinzehong means working with a manufacturer committed to precision, customization, and long-term customer success. Whether you need a standard etched mesh or a highly engineered photo etched mesh solution, our team is ready to help transform your design into a reliable, high-quality product.
The production of etched mesh begins with selecting the appropriate metal material, such as stainless steel, nickel, copper, brass, titanium, or specialized alloys. After cleaning the metal surface, a light-sensitive photoresist is laminated onto both sides of the sheet.
A high-resolution artwork containing the mesh pattern is then aligned and exposed under ultraviolet light. The exposed areas are developed, leaving the desired pattern protected while the remaining metal is removed during chemical etching.
Unlike mechanical punching or laser cutting, chemical etching removes material uniformly without introducing heat, mechanical deformation, or burr formation. This allows manufacturers to produce extremely fine openings while maintaining excellent flatness.
After etching, the photoresist is stripped away and the mesh undergoes cleaning, inspection, and optional surface finishing. Additional processes such as passivation, electropolishing, or plating may be applied depending on the final application.
The result is a highly precise etched mesh with consistent opening dimensions, smooth surfaces, and outstanding repeatability for demanding industrial environments.
Choosing the right metal mesh manufacturing process depends on the balance between precision, production volume, cost, and design complexity.
Photo-etched mesh excels when projects require micron-level accuracy, intricate patterns, and burr-free edges. Because the process does not involve mechanical force or heat, it preserves material properties while producing highly consistent results. It is especially suitable for precision filtration, electronics, aerospace, and medical applications.
Laser-cut mesh is ideal for thicker materials or lower-volume production where design flexibility is important. However, laser processing may create heat-affected zones, slight edge tapering, or micro burrs that require additional finishing.
Traditional woven mesh remains a cost-effective option for general filtration and screening. However, wire intersections can produce variations in opening size, and woven structures may deform under certain manufacturing or operating conditions.
When evaluating manufacturing methods, engineers should consider factors including required tolerance, minimum opening size, sheet flatness, material thickness, production quantity, and downstream assembly requirements.
For projects demanding repeatable precision and custom geometries, photo etched mesh generally provides the highest overall performance despite a higher initial manufacturing cost.
Quality Assurance
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