What Every Engineer Should Know About Photochemical Machining

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Industries Using Precision Laser Cutting


Photochemical machining (PCM) is a precision manufacturing process that blends chemistry and photolithography to produce intricate metal components without mechanical stress or heat distortion. For engineers seeking high accuracy, design flexibility, and cost-effective scalability, PCM offers a compelling alternative to traditional machining methods.

What Is Photochemical Machining?

Photochemical machining is a subtractive process that uses photoresist and chemical etchants to selectively remove metal from thin sheets. Unlike laser cutting or stamping, PCM is non-contact and non-thermal, preserving the integrity of the material.

How Photochemical Machining Works:

  1. Cleaning: The metal sheet is cleaned to remove oils and contaminants.
  2. Photoresist Application: A light-sensitive polymer is applied to the surface.
  3. Imaging: The desired pattern is transferred using UV light exposure.
  4. Development: Unexposed photoresist is washed away, revealing the metal to be etched.
  5. Etching: A chemical solution removes the exposed metal areas.
  6. Stripping: Remaining photoresist is removed, leaving behind the finished part.

Why Engineers Choose Photochemical Machining

Photochemical machining offers several engineering advantages that make it ideal for high-precision applications:

Applications of Photochemical Machining

PCM is widely used across industries where precision and complexity are important:

Design Tips for Photochemical Machining

To optimize your design for PCM, consider the following:

Material Thickness

Typical range: 0.0005" to 0.060". Thinner materials allow for finer detail.

Feature Size

Minimum feature size depends on material thickness, but features as small as 0.001" are achievable.

Tolerances

Standard tolerances are ±10% of material thickness. Tighter tolerances may be possible with optimized designs.

Edge Quality

PCM produces clean, burr-free edges ideal for functional and aesthetic applications.


Ready to Explore Photochemical Machining?


If you're an engineer or product developer looking to push the boundaries of precision and efficiency, photochemical machining could be the solution you've been searching for.

Our team specializes in turning complex designs into high-performance components, quickly, affordably, and with unmatched precision.

Contact us today to discuss your project or request a free design consultation.