# Plate blank

A rectangular plate or sheet blank at any width, length and thickness.

## Geometry

A **width** (X) by **length** (Y) rectangle centred on the origin, **thickness** up from the XY plane (+Z). Sharp
edges.

## Parameters

| Parameter | Meaning |
|---|---|
| `width` | Width along X, mm |
| `length` | Length along Y, mm |
| `thickness` | Thickness along Z, mm |
| `material` | `aluminium-6061` (6061-T6), `aluminium-5052` (5052-H32), `steel` (S235JR), `steel-dc01` (EN 10130 DC01), `stainless-304` (1.4301), `brass`, `acrylic` (PMMA) |

## Source

A plate blank is fully defined by its designation width × length × thickness; no other dimension is involved.
Preset list: blank sizes of the step.parts catalogue (MIT), see `library/NOTICE.md`.