There is a continued trend towards more complex devices made up of smaller and smaller component parts. They often form part of critical applications – from medical devices to navigation systems and filters.


The intricate components required to transform designs into actual products must be more precise than ever before. They must also be entirely burr and stress-free since the smallest irregularity will have a much larger effect on the end result.

what are burrs?

Burrs are small, sharp or rough edges of unwanted material that can form on metal parts during manufacturing. In a world of micro precision, burrs have the potential to jeopardise the performance of a component by affecting fine detail and minute parameters.

They can:

  • reduce the safety of a critical part,
  • increase susceptibility to corrosion,
  • affect dimensional accuracy,
  • cause lubrication issues for moving parts,
  • reduce surface quality, leading to poor finishes,
  • create increased stress during operation.

Burrs are an unavoidable result of many of the conventional manufacturing processes, including forming, stamping, cnc machining, and laser cutting. To achieve accuracy, parts have to go through an additional de-burring process such as barrelling, adding time and cost.

You can avoid this by using chemical etching.

how does chemical etching solve the problem?

The chemical etching process employs no heat or force, reducing any risk of stress or deformation. There is no effect on materials’ physical properties, causing no compromise to tight tolerances.

Instead, the use of chemicals means the physical properties of the material remain unchanged, leaving their characteristics intact so that the final component meets specified micro-precision designs.

additional benefits of chemical etching

chemical etching process

Lead time: Rapid prototyping

With chemical etching, prototypes can be produced from drawings in a matter of days. Moreover, it allows you to move from prototyping to industrial-scale production almost instantly.

Low-cost tooling and set-up 

Because component features are etched at the same time, complexity of the profile does not have a bearing on price: there is no difference if only one or thousands of apertures are required. Tooling is digital so it is low-cost and can be quickly modified.

Complexity at a micro scale

Since the biggest design challenges often involve the smallest and most precise part of your product, it’s important to know the precision of a manufacturing method. With chemical etching, you can go as small as 25 μm, making it one of the most high-precision manufacturing processes. Photo chemical etching is especially suitable when round holes, sharp edges and straight or profiled edges are desired.

chemical etching

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