Custom Precision Shims, Gaskets & Screens: Etched to Your Specifications
Precision components often perform the smallest roles in an assembly, but they can have the greatest impact on overall performance. From maintaining accurate spacing between mating components to controlling fluid flow and protecting sensitive equipment, custom shims, gaskets, washers, screens, and meshes help ensure every system functions as intended.
Using photochemical etching, Fotofab manufactures burr-free precision components with intricate geometries that would be difficult or expensive to produce using conventional processes. Without hard tooling, engineers can rapidly evaluate design revisions, shorten lead times, and reduce manufacturing costs during prototype development while maintaining a seamless transition into production.
Custom Shims & Precision Components for Critical Applications
For mechanical engineers, design engineers, manufacturing engineers, OEM engineers, and product development teams, selecting the right component is about far more than matching basic dimensions. Material selection, tolerances, geometry, and manufacturing method all influence assembly performance, reliability, and long-term durability. Understanding these factors early in a project helps reduce redesigns, improve manufacturability, and control total costs.
While standard catalog components may suit general applications, many precision assemblies require custom shims and other engineered parts designed around exact customer specifications. A custom approach provides the proper fit, accommodates unique configurations, and allows engineers to optimize both performance and assembly efficiency.
Whether you’re developing a single prototype or scaling to production volumes, the Fotofab team provides the engineering expertise and manufacturing capability to deliver precision components tailored to your application.
Custom Precision Shims
What Are Custom Shims?
A shim is a thin precision component used to control spacing, alignment, and mechanical tolerances within an assembly. By filling controlled gaps between mating components, custom shims help maintain accurate positioning, improve alignment, and compensate for manufacturing variation throughout the total assembly.
Unlike off-the-shelf products, custom metal shims are manufactured to exact customer specifications, allowing engineers to define the required material, thickness, shape, and geometry for each application. Where necessary, multiple shims or multiple thicknesses can be used together to absorb accumulated tolerances while maintaining consistent assembly performance.
Using precision photochemical etching, Fotofab manufactures specialty shims while eliminating burrs, heat distortion, and mechanical stresses associated with laser cutting, machining, and stamping. The result is a highly accurate component that requires little or no finishing before installation.
Benefits of Custom Metal Shims
Engineered custom metal shims offer several advantages over standard catalog parts, including:
- Precise thickness control
- Improved alignment between mating components
- Reduced vibration and wear
- Better assembly consistency
- Greater design flexibility
- Simplified installation
- Lower overall manufacturing costs
Common Shim Applications
Custom precision shims are used throughout industries where alignment, spacing, and repeatability are critical. Typical applications include:
- Aerospace assemblies
- Medical devices
- Semiconductor equipment
- Electronics manufacturing
- Industrial machinery
- Optical systems
- Precision instrumentation
Learn more about our Photochemically Etched Shims.
Custom Gaskets & Washers
Precision assemblies rely on more than accurate spacing. Gaskets and washers also play an important role in sealing, load distribution, alignment, and protecting critical components from premature wear. When manufactured to exact customer specifications, these components improve reliability while helping ensure the total assembly performs as designed.
Precision Gaskets
Metal gaskets are commonly used where elastomer seals are unsuitable due to high temperatures, aggressive environments, or demanding mechanical loads. Photochemical etching enables engineers to produce custom gasket geometries with exceptional accuracy while maintaining the integrity of the base material.
Unlike stamped components, etched gaskets feature clean, burr-free edges that improve sealing performance and reduce the need for most secondary processes. Engineers also have greater freedom to incorporate intricate internal cutouts, narrow sealing features, and complex external profiles without increasing tooling costs.
Precision Washers
Custom washers perform a variety of functions beyond simply distributing load. They can improve alignment, maintain precise spacing, protect surfaces, and provide controlled movement within mechanical assemblies.
Photochemical etching allows washers to be manufactured in virtually any shape or configuration, making them ideal for applications where standard hardware cannot achieve the required fit. Whether producing simple spacers or highly engineered specialty components, Fotofab manufactures precision washers that deliver consistent quality from prototype through production.
Precision Screens & Meshes
Precision screens and meshes regulate the movement of liquids, gases, light, and particles throughout countless engineered systems. Achieving consistent performance depends on maintaining accurate feature sizes, open area, and dimensional stability across every component.
Unlike woven mesh or mechanically punched screens, photochemical etching produces highly accurate hole patterns with excellent repeatability. Engineers can specify intricate geometries, controlled open areas, and complex feature layouts while maintaining tight tolerances across the entire part. Because there are no mechanical cutting forces, delicate features remain free from distortion.
Fotofab manufactures chemically etched screens and meshes for applications including:
- Filtration systems
- Flow control devices
- Medical equipment
- Aerospace systems
- Industrial machinery
- Electronic assemblies
Why Photochemical Etching Is the Ideal Process
Photochemical etching offers significant advantages over conventional manufacturing methods when producing custom shims, gaskets, washers, screens, and meshes.
No Tooling Constraints
Traditional stamping requires expensive hard tooling, making design revisions both costly and time-consuming. Photochemical etching replaces tooling with digital artwork, allowing engineers to modify designs quickly, shorten lead time, and significantly reduce manufacturing time throughout product development.
Precision Manufacturing
Unlike laser cutting or precision machined components, photochemical etching introduces no heat-affected zones or mechanical stress. The result is burr-free parts with intricate geometries, excellent edge quality, and repeatable dimensions suitable for the most demanding applications.
Material Flexibility
Fotofab manufactures precision components from a wide range of engineering materials, including:
- Stainless Steel
- Copper Alloys
- Nickel Alloys
- Aluminum
- Specialty metals
Design Considerations
Designing precision components for photochemical etching begins with understanding how the finished part will function within the assembly. Factors such as material selection, thickness, tolerances, and geometry all influence performance, manufacturability, and long-term reliability.
Thickness Selection
Thin components may be used for fine screens or precision gaskets, while thicker shim stock provides greater rigidity for alignment and spacing applications. Fotofab manufactures components in multiple thicknesses, allowing engineers to optimize designs for specific performance requirements while minimizing unnecessary material costs.
Tolerance Requirements
Because photochemical etching produces highly repeatable features without introducing burrs or mechanical distortion, engineers can confidently specify demanding tolerances for applications where precision directly affects system performance.
Design for Manufacturability
Fotofab’s engineering team works closely with customers to optimize feature sizes, geometries, and material selection early in the design process. This collaborative approach helps eliminate unnecessary manufacturing complexity while ensuring each component can be produced efficiently from prototype through production.
Applications Across Industries
Fotofab manufactures custom precision components for OEMs across a broad range of industries, supporting applications where accuracy, repeatability, and reliability are critical.
Aerospace and Defense
Custom shims help maintain precise alignment within aircraft assemblies, while etched screens and filtration elements support fuel, hydraulic, and environmental control systems where consistent performance is essential. See how we serve the Aerospace and Defense industries.
Medical Devices
Precision gaskets, washers, and screens are used in surgical instruments, diagnostic equipment, fluid management systems, and other medical assemblies that demand exceptional quality and dimensional accuracy. See how we’re helping shape the Medical industry.
Electronics
Electronic assemblies rely on custom shims, washers, and shielding components to maintain alignment, manage spacing, and support EMI/RFI performance. Precision-etched components also simplify integration into increasingly compact electronic designs. See how we support the Electronics industry.
Industrial Equipment
Industrial machinery uses specialty shims, wear components, screens, and flow-control elements to improve assembly accuracy, extend equipment life, and maintain reliable operation in demanding environments. See what we’re doing for the Industrial sector.
Why Partner with Fotofab
Choosing the right manufacturing partner is just as important as selecting the right component. With decades of photochemical etching experience, Fotofab helps engineers develop precision parts that meet demanding performance and manufacturing requirements.
Our team provides engineering support throughout every stage of your project, from material selection and design assistance to prototype development and production planning. Combined with tight process control, fast turnaround times, and exceptional repeatability, we deliver custom precision components built to your exact details and performance requirements.
Frequently Asked Questions
What are custom precision shims?
Custom precision shims are thin engineered components manufactured to exact dimensions for controlling spacing, alignment, and tolerances within mechanical or electronic assemblies.
What materials can be used for custom shims?
Fotofab manufactures custom shims from stainless steel, aluminum, copper alloys, nickel alloys, titanium, and many other specialty metals depending on application requirements.
How are etched shims different from stamped shims?
Photochemical etching produces burr-free shims with tighter dimensional control, more complex geometries, and no hard tooling costs, making it ideal for both prototypes and production.
Can Fotofab manufacture custom shim washers?
Yes. Fotofab manufactures custom washers, shim washers, spacers, and other precision components in a wide variety of sizes, shapes, and thicknesses.
What industries use precision screens and meshes?
Precision screens and meshes are used across aerospace, medical devices, electronics, semiconductor manufacturing, industrial equipment, filtration, and flow-control applications.
What tolerances can be achieved through photochemical etching?
Achievable tolerances depend on material thickness and part geometry. Fotofab works closely with customers to optimize designs for maximum precision and repeatability.
Can custom gaskets be prototyped before production?
Absolutely. Because photochemical etching requires no hard tooling, custom gaskets, shims, washers, screens, and meshes can be rapidly prototyped, evaluated, and refined before transitioning seamlessly into production.
Precision Components Designed Around Your Application
Every precision assembly depends on components that fit correctly, perform consistently, and integrate seamlessly with the overall design. Custom shims, gaskets, washers, screens, and meshes provide the accuracy needed to improve alignment, sealing, filtration, and long-term reliability.
Photochemical etching enables these components to be manufactured with burr-free precision, eliminating the tooling constraints and secondary finishing often associated with conventional manufacturing methods.
Need Custom Shims or Precision Components?
Partner with Fotofab to develop custom-etched shims, gaskets, washers, screens, and meshes manufactured to your exact specifications and optimized for performance, manufacturability, and production.
Fotofab is committed to quality.
