Overview

Precision nameplate etching is judged at the edge. A nameplate can be the right size, the right alloy and the right colour and still be rejected if a 0.1 mm stroke closes up, if a character shoulder washes out, or if paint bleeds past a letter into the field. The process holds those details by combining a high-resolution phototool, collimated exposure and a shallow, tightly timed etch, so the wall that defines each character stays sharp instead of rounding into the background.

The practical numbers are tighter than general nameplate work. Line width down to 0.05 mm and character stroke down to 0.08 mm are held on 0.1 mm stock; etch depth is controlled to ±0.01 mm so paint fill sits level with the surface; registration between the etched graphics and any pre-punched hole or cut edge holds to ±0.02 mm. Because side-etch is predictable, the phototool is compensated up front rather than the artwork being redrawn after the first sample.

Parameter Window

• Available Materials: stainless steel 304/316L, aluminum 1060/5052, brass H62, nickel silver, copper
• Material Thickness Range: 0.1–1.0 mm
• Tolerance: ±0.05 mm on profile, ±0.01 mm on etch depth, ±0.02 mm graphic-to-hole registration
• Minimum Feature: 0.05 mm line width, 0.08 mm character stroke on 0.1 mm stock, 2 pt text legible under 10× magnification
• Surface Options: brushed, mirror, anodized, black oxide, paint fill (1–3 colours), electroplated Ni/Au, selective adhesive
• Compliance: ISO 9001 process control, RoHS/REACH material traceability

Manufacturing Process / Workflow (8 Steps)

1. Artwork Engineering — Convert the file to vector, outline fonts, correct stroke widths against the target thickness and check that every glyph survives at final size.
2. Phototool Output — Image at high resolution with side-etch compensation applied, then measure line width and character height on the film before release.
3. Sheet Preparation — Select the plate, check flatness and surface, degrease and micro-etch so the resist keys to the metal without pinholes.
4. Resist Lamination — Laminate thin dry film under vacuum-assisted nip, eliminating bubbles that would otherwise print as missing strokes.
5. Collimated Exposure — Expose in hard contact under parallel light with the film registered to tooling holes, so graphics land in the right place on the plate.
6. Development — Develop, rinse and dry, then inspect the open strokes under magnification; under-developed resist is the main cause of blurred characters.
7. Controlled Etch — Etch to a shallow depth with tight time and temperature control, monitoring depth rather than relying on a fixed dwell.
8. Fill, Finish, Inspect — Strip resist, fill paint or apply anodising, cure, then verify line width, depth, edge sharpness and barcode grade before packing.

Core Advantages

1. Sharp character shoulders: Collimated exposure and a shallow etch keep the wall between letter and field vertical, so type reads crisply instead of looking soft or bolded.
2. Stable fine line: 0.05 mm lines and 0.08 mm strokes reproduce identically across a panel, which matters for scales, legends and dense model data.
3. Depth under control: ±0.01 mm depth tolerance lets paint fill finish flush with the surface, so a finger or a wipe does not catch the edge.
4. Registration to holes: Graphics are exposed against tooling holes, so apertures, LED windows and mounting holes line up with the print at ±0.02 mm.
5. No tool wear drift: There is no cutting edge to dull, so the ten-thousandth plate has the same line width as the first, and a repeat order matches without re-approval.
6. Clean multi-colour fill: Sharp walls contain the paint, so two colours can sit within 0.3 mm of each other without bleeding into the field.

Typical Applications

• Instrument faceplates: Scales, tick marks and unit legends on 0.3 mm aluminum where a 0.05 mm line must stay visible.
• Serial and model plates: Small characters and data matrices that must remain machine-readable after years of service.
• Medical device labels: Fine dosage markings and symbol legends on 316L that survive repeated disinfection.
• Control panel overlays: Legends, window apertures and indicator cut-outs registered to the housing at ±0.02 mm.
• Premium brand plates: Deep-etched logos with two-colour fill on brass, where the edge defines the perceived quality.
• Optical scale plates: Fine graduations and index marks used for alignment in measurement instruments.

Design Notes & Process Considerations

1. Minimum stroke versus thickness: Keep the narrowest stroke at 0.08 mm or 1.2 × material thickness, whichever is larger; below that the resist lifts and the character breaks.
2. Depth and fill: For paint fill, specify 0.03–0.06 mm depth with a ±0.01 mm window, and say whether the fill should finish flush or slightly recessed.
3. Side-etch allowance: Etching removes metal sideways as well as down, so a nominal 0.05 mm line needs a slightly wider phototool line; state whether dimensions are checked on the part or the film.
4. Spacing between features: Keep 0.15 mm between adjacent characters and between graphics and a cut edge, otherwise the field etches away and letters lose their base.
5. Edge sharpness criteria: Agree on a visual standard at 10× and a measurable one, such as radius at the character shoulder, instead of "sharp edges" alone.
6. Panel and registration scheme: Tooling holes shared across the panel keep every plate in the same position. Precision nameplate etching depends on that datum as much as on the etch itself.