Glass Polishing Process

Single Side Polishing Glass

Single Side Polishing

Once reduced to near final thickness through single-side lapping, a similar proprietary process is used to polish the surface clear and produce surface qualities to as low as 10/5 scratch and dig with sub-nanometer surface roughness.

Double Side Polishing Glass

Double Side Polishing

After lapping to thickness, the opaque surface is first cleared through our First (or Commercial) Polishing Process. With typical scratch and dig results of 60/40 and roughness of <1nm, this can be the final stage for less critical surface requirements.

Double Side Final Polishing Glass

Double Side Final Polishing

Our double-side final glass polishing process maintains the flatness and parallelism characteristics achieved through the lapping process while creating a pristine surface with low roughness and surface defects. We can generally achieve scratch and dig specs as low as 5/2 and roughness to 5 Angstroms.

Double Side Super Polishing Glass

Double Side Super Polishing

Where extremely smooth surfaces are required, our Super Polish process can achieve roughness as low as 2 Angstroms while effectively eliminating any sub surface damage from previous lapping and polishing processes.


Common Terms for Polishing

Polishing Capabilities

Polish Minimum Maximum Tolerance
Flatness 1/10 Wave NA NA
Bow/Warp <1um/Inch NA NA
TTV NA+/-1um  
Thickness 200um NA +/-5um
Size 10mm 300mm +/-0.10mm