3M™ 468XW Lapping Film Disc

3M 468XW is a 127 mm lapping film disc in 3 µm grade. This precision abrasive film, on a polyester backing, is used for fine polishing and high-precision finishing, particularly in fibre optics.

Specifications

• Backing: polyester film.
• Grade: 3 µm.
• Diameter: 127 mm.

The 3 µm grade

At 3 µm, you are into fine finishing: the film removes the scratches left by 9 or 12 µm grades and prepares the final polishing step, at 1 µm or below. The scratch produced is too fine to be seen with the naked eye, but still visible under a microscope on an optical face.

Why a lapping film

The grains of a lapping film are sorted to a very tight tolerance and spread in an even layer on a flat film. No out-of-size grain scratches the surface: the finish is even and repeatable from one part to the next, which is essential on a fibre connector or a metrology part.

Application

Lay the disc on a flat, clean platen; dust under the film creates a high spot. Work with the lubricant recommended for the application. Clean the part thoroughly before moving to the next grade.

See also the lapping films 3M 266X, 668X diamond and 661X in sheets, and our micro-abrasive sheets.