| A | B |
|---|
| Brass | An alloy of copper and zinc or copper, zinc, and lead. |
| Brass | An alloy of copper and zinc or copper, zinc, and lead. |
| Bronzes | Alloys of copper and tin in varying proportions, mostly copper. Sometimes other metals such as zinc are added. |
| Buff | To polish a surface on a fabric wheel by rubbing it with some rough material. |
| Burnish | To smooth or polish by a sliding or rolling motion. |
| Burr | A rough or jagged edge caused by cutting or punching. |
| Bushing | A hollow cylindrical sleeve used as a bearing or as a guide for drills or other tools. |
| Cabinet drawing | A kind of oblique pictorial drawing in which receding edges are drawn to one half their proportional length. |
| CAD | Computer-aided drafting or computer-aided design and drafting. |
| Caliper | Measuring device with two adjustable legs. It is used for measuring thickness or diameters. |
