Precision Lapping Services
Precision Lapping Services
Lapping (Loose Abrasive Polishing) is a specialized process that ensures metal part surfaces are as uniformly flat as possible. This process can also create a fine or mirror finish on specific metals.
Since 2007, YISHUN Optical has been providing precision lapping services, specializing in high-accuracy optical and mold components. Our advanced lapping technology helps us deliver cost-effective solutions without compromising on quality.
Contact Us for more information on our high-precision lapping and metal grinding services, and we’ll gladly assist with your specific needs. YISHUN Optical is your trusted partner for premium metal grinding and lapping.


Understanding the Lapping Process
Lapping is an advanced process used to flatten surfaces with extreme precision, achieving tolerances of up to 0.0005 to 0.00002 inches. We adjust pressure and process duration to suit the material and required finish, ensuring a mirror-like flatness. Unlike fine grinding, lapping uses loose abrasives, which makes it ideal for achieving the highest levels of surface smoothness.
Precision Lapping & Metal Grinding for Harder Materials
Our lapping services are especially effective for harder materials, achieving finer tolerances and superior finishes compared to softer materials. Only very rigid materials can be polished to a true mirror finish, which is perfect for high-precision optical and mold applications.


Lapping Process Considerations
Lapping is an averaging process, removing material primarily from high points on the surface to create a flat, smooth finish. The process is carefully controlled to meet specific material removal and surface smoothness requirements.
Factors we consider when quoting a lapping process include:
- Material type and hardness
- Desired surface finish
- Thickness of material to be removed
- Part geometry and size
Fine Metal Grinding & Double-Sided Lapping Services
In addition to single-sided lapping, we offer fine metal grinding, also known as double-sided lapping. This process works on both sides simultaneously, using a bonded abrasive plate for high precision, ensuring parallelism and uniformity across both faces.
Our fine grinding capabilities provide precise control of thickness and parallelism. By processing both sides simultaneously, we achieve consistent flatness and material removal rates, ensuring high precision results and increased efficiency.


Additional Service Capabilities
YISHUN Optical offers a full range of precision manufacturing services, allowing us to create parts with exact specifications.
Our additional services include:
- Precision Turning
- CNC Machining
- Finishing and Deburring
Additional Service Capabilities
YISHUN Optical offers a full range of precision manufacturing services, allowing us to create parts with exact specifications.
Our additional services include:
- Precision Turning
- CNC Machining
- Finishing and Deburring


Industries We Serve
YISHUN Optical provides precision lapping and grinding services for a variety of industries, including:
- Electronics
- Aerospace & Defense
- Medical
- Scientific Instruments
Contact YISHUN Optical for Precision Lapping & Metal Grinding Services
YISHUN Optical is your trusted partner for quality grinding and fine grinding services. Request a quote today or contact us to discuss your project needs.