| Bedding a Core | (english) Resting an irregularly shaped core on a bed of sand for drying. |
| Bell Mouth | (english) The flaring or tapering of a machined hole, usually made at the entrance end because of misalignment or spring of the cutting tool. |
| Belly Roll | (english) Roll used on the line to steady plate. |
| Belt Wrapper | (english) Line equipment used in the Tin Mill for starting coils on prime or reject reels. The belt wrapper ensures a proper start. |
| Bench Grinder | (english) A small grinding machine for shaping and sharpening the cutting edges of tools. |
| Bench Lathe | (english) A small lathe mounted on a bench or table. |
| Bench Rammer | (english) A short rammer used by bench molders. |
| Bench Work | (english) Work done primarily at a bench with hand tools. Occasionlly suplemented by small power-driven tools. |
| Bench-Blower | (english) A small core-blowing machine, utilizing a removable sand magazine and blow heat. |
| Bend Radius | (english) The inside radius of a bent section, |