SURFACE FINISHING
Sanding
Sanding can produce a mild polish completely free of burrs and dust with a shiny, high gloss finish. However, it might be unable to create sharp corners and pockets.
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Introduction
Sanding is the process of rubbing abrasive particles on the surface of parts to create a random, non-linear texture.
Sand, lead beads, and other materials are examples of standard abrasive media. These materials are attached to a plate or paper (referred to as sandpaper) for rubbing. The capacity of these abrasive particles is measured in grit number. A higher grit number means more fine particles and will produce a finer surface finish.
Sanding can produce a mild polish completely free of burrs and dust with a shiny, high gloss finish. However, it might be unable to create sharp corners and pockets.
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Specify abrasive progression, direction and endpoint condition
Sanding requirements should define the starting surface, visible areas, abrasive endpoint or texture target, directionality, edge treatment and any subsequent coating or polishing sequence. These details make the finish repeatable across parts and batches.
Engineering data to lock before release
| Starting surface | Machined, cast, formed or prior-coat condition |
|---|---|
| Endpoint | Abrasive/texture target or approved visual sample |
| Directionality | Required grain direction or non-directional result |
| Sequence | Sanding before polish, coating, marking or assembly |
When a cosmetic result is critical, pair the texture requirement with a physical or photographed comparator under defined lighting.
