Technical guidelines

METAL TYPE THICKNESS RANGE MAXIMUM SHEET SIZE
Steel and stainless steels 0.01mm – 1.5mm 600mm x 1500mm
Nickel and nickel alloys 0.01mm – 1.5mm 600mm x 1500mm
Copper and copper alloys 0.01mm – 1.5mm 600mm x 1500mm
Aluminium 0.01mm – 1.5mm 600mm x 1500mm
Titanium and titanium alloys 0.01mm – 1mm 600mm x 550mm

Standard etching tolerances

MATERIAL THICKNESS STANDARD TOLERANCE TECHNICAL TOLERANCE HOLE/SLOT SIZE BAR WIDTH
0.025mm - 0.050mm ±0.025mm Contact us 0.1mm 0.1mm
0.050mm-0.100mm ±0.025mm Contact us 0.1mm 0.1mm
0.100mm - 0.125mm ±0.025mm Contact us 100% metal thickness 100% metal thickness
0.125mm - 0.150mm ±0.025mm Contact us 100% metal thickness 100% metal thickness
0.150mm - 0.200mm ±0.025mm Contact us 100% metal thickness 100% metal thickness
0.200mm - 0.250mm ±0.025mm Contact us 100% metal thickness 100% metal thickness
0.250mm - 0.500mm ±10% metal thickness Contact us 100% metal thickness 100% metal thickness
0.500mm - 1.00mm ±10% metal thickness Contact us 100% metal thickness 100% metal thickness
1.000mm - 1.500mm ±10% metal thickness Contact us 100% metal thickness 100% metal thickness

Corner radii

With photo etching, the smallest inside and outside corner radius achievable is directly proportional to the thickness of the selected metal being processed.

A - Outside corner radius – minimum of 75% material thickness
B - Inside corner radius – minimum of 100% material thickness


Hole and profile geometries

During etching, the etchant attacks the material laterally and vertically resulting in an edge “cusp” which is typically 10 to 20% of material thickness.

Precision Micro can control the etch cusp, allowing for a range of profiles. This gives products unique characteristics, such as sharp cutting edges or conical openings.

1 Single-sided etch

Used to achieve a specific depth, profile or for thin gauge metals

2 Convex profile

Industry standard edge condition for through-etched components

3 Parallel profile

Used to reduce etch cusp

4 70/30 etch

Combines through etching and depth etching and can also be used to produce conical apertures or cutting edges

5 Double-sided depth etch

Used for surface engraving on both sides

6 Concave etch

Used to achieve a straighter edge profile

7 2/3 stage etch

Used to achieve multiple depths, requiring additional imaging


Component tags

Tags are threads of metal, retaining components in the sheet during manufacture. They can be necessary when a technical etch tolerance is required or components require subsequent plating, electroplating or assembly.

Precision Micro offers a range of etch tags which can be selected based on component geometry, thickness or application.

Once manufactured, components can be supplied tagged into the sheet, or removed from the sheet and supplied individually. Subject to the component size, design or tolerance requirement, Precision Micro can also offer components without tags.

1 Protruding tag

The default tag which does not affect the surface area of the part

2 Half-etch protruding tag

This aids component removal from the sheet

3 Recess tag

This is used when a tag protrusion is not permitted

4 Half-etch recess tag

This removes tag protrusion and aids component removal from the sheet

Want to know more?

See how photo etching works

The basic principles of photo etching can be demonstrated in nine process steps.

Technical guidelines

Created to guide you through designing for the photo etching process, outlining achievable tolerances and component features.

Talk to us

With backgrounds which include CAD, machining, technical and operations planning, our sales engineers have the photo etching know-how to answer your questions.

Request samples

Component samples designed specifically to demonstrate the features and benefits of photo etching.

Request a quote

Submit your component data for technical evaluation and pricing.

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