| Bed-In | (english) Method whereby drag may be rammed in the pit or flask without necessity of rolling over. Process used in production of heavy castings. |
| Bedding | (english) Sinking a pattern down into the sand to the desired position and ramming the sand around it. |
| 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. |