Lapping and polishing services are expertly provided by Valley Design for a wide variety of materials and applications:
Product applications with lapping and polishing required:
At Valley Design, we offer a world of precision through one of the most diversified lapping and polishing facilities in the world. Our experience over the past 37 years with all types of materials has enabled us to offer the best finishes and tightest tolerances in the industry. We also offer 4 axis CNC micromachining capabilities along with our lapping and polishing and dicing services, which makes Valley a one-stop shop for all your precision machining requirements.
Typical Tolerances:
Thickness tolerances: +/- .5um (20 millionths of an inch)
Parallelism: +/- .25um (10 millionths of an inch), to as low as 1 arc second
Flatness: λ/10 = 1/5 band
Typical Surface Finish Guidelines:
Lapped | Polished | |
96% Alumina | 10-20u” Ra | 2-3u” Ra |
99.6% Alumina | 8-16u” Ra | 1-2u” Ra |
Aluminum | 20u” Ra | 5-10nm Ra |
Aluminum Nitride | 25u” Ra | 2u” Ra |
Fused Silica | 25u” Ra | < 7 Å Ra (20/10 scratch/dig) |
Glass | 25u” Ra | < 10 Å Ra (60/40 scratch/dig) |
Sapphire | 10-20u” Ra | < 10 Å Ra (60/40 scratch/dig) |
Stainless Steel | 15-20u” Ra | < 50 Å Ra |
To convert any of these measurements, go to our online conversion calculator
Any of these materials can be polished to higher levels of surface quality and are also available from stock. Contact us for all your precision lapping and polishing requirements.