Overview

Custom metal mesh etching cuts holes, slots and perforation patterns into sheet metal with photochemical machining instead of weaving wire or punching dies. Dry-film resist is laminated to both faces of the sheet, the mesh pattern is exposed and developed, and the open areas dissolve in a matched etchant until the aperture field is released. Hole shapes can be round, square, hexagonal, slotted or mixed within one panel, and open area is set by the artwork rather than by wire count. Sheets run from 0.03 mm to 1.0 mm in stainless steel 304/316L, copper, brass, nickel, molybdenum and titanium.

Buyers pick custom metal mesh etching when woven mesh will not hold tolerance. Woven wire carries crimp, weaving variance and open-area drift, while an etched sheet repeats the same aperture and web geometry across the whole panel and between batches. The parts leave the bath flat and burr-free, so they bond, seal and stack without leveling, and fine webs down to 0.08 mm stay attached at 0.1 mm stock. Because each pattern is only a new film, custom apertures, logos and border features cost nothing extra in tooling, which suits engineering prototypes and mixed production runs alike.

Parameter Window

• Available Materials: stainless steel 304/316L, copper, brass, nickel, molybdenum, titanium
• Material Thickness Range: 0.03–1.0 mm
• Tolerance: ±0.02 mm on aperture size, ±0.05 mm on outline
• Minimum Feature: 0.08 mm web width and 0.15 mm aperture on 0.1 mm stock
• Surface Options: deburring, electropolishing, electroplated Ni/Au/Sn, black oxide, adhesive backing, flattening
• Compliance: ISO 9001 process control, RoHS/REACH material traceability

Manufacturing Process / Workflow (8 Steps)

1. Pattern Review — Convert the aperture drawing to vector artwork and check web width, open area and border features against sheet thickness.
2. Material Selection — Match alloy to duty: stainless for strength and corrosion, copper for conductivity, molybdenum for heat and rigidity.
3. Cleaning & Lamination — Degrease both faces and laminate dry-film resist so no bubbles sit over thin webs.
4. UV Exposure — Expose both sides through registered film to keep top and bottom hole walls aligned.
5. Development — Wash out unexposed resist to open the full aperture field, then inspect for blocked webs or pinholes.
6. Etching — Spray etchant from both sides at controlled temperature and line speed until holes break through and web widths hit target.
7. Stripping & Finishing — Remove resist, neutralize, deburr, then electropolish, plate or apply adhesive backing as specified.
8. Inspection & Packaging — Verify aperture size, web width and open area on optical measurement, then pack flat between liners.

Core Advantages

1. True hole geometry: Apertures are produced exactly as drawn — round, square, slot or hexagon — with no wire crimp or die roll-over.
2. Flat, burr-free sheets: Chemical removal leaves the sheet level and edge-clean, so parts bond, seal and stack without shimming.
3. Controlled open area: Aperture and web dimensions repeat across the panel and from batch to batch, keeping flow and shielding stable.
4. No tooling cost: A new pattern is a new film, so custom apertures and short runs stay economical.
5. Fine webs at thin gauge: Webs of 0.08 mm hold on 0.1 mm foil for dense shielding windows and electrode grids.
6. Mixed materials, one process: Stainless, copper, brass and nickel parts share the same line, so one order can mix alloys.

Typical Applications

• EMI shielding windows: Dense aperture fields in stainless or copper for enclosure vents that must attenuate yet breathe.
• Battery electrode meshes: Current collector grids with defined open area for cell stacks and test fixtures.
• Speaker and microphone grilles: Fine perforation fields with etched borders and mounting holes in one part.
• Sensor protection screens: Flat covers that block particles without blocking flow over gas and liquid sensors.
• Decorative panels and light diffusers: Uniform hole fields, logos and mixed patterns in brass or stainless.
• Vacuum and fixturing plates: Flat perforated plates for holding thin substrates during inspection and assembly.

Design Notes & Process Considerations

1. Web width versus thickness: Keep webs at or above 0.8× sheet thickness, or they thin and detach during etching.
2. Open area versus stiffness: Raising open area lowers rigidity; state handling loads and support points in the drawing.
3. Aperture shape: Rounded corners and radiused slot ends survive flow and cleaning better than sharp-angled holes.
4. Border and tabs: Leave solid borders, tabs or frames for handling and mounting; mesh-only parts are hard to fixture.
5. Particle control: Specify deburring and cleaning when the mesh serves electronics or analytical equipment.
6. Flatness after etching: Thin foils may need flattening after custom metal mesh etching; call out flatness per 100 mm for parts that bond or seal.