Production Lab Terms

2. the cylindrical fibers (like soda straws) which make up lumber, oriented along the vertical axis of a tree.
3. a device (usually on a drill or drill press) used to clamp a bit in place, capable of gripping a large range of bit or shank sizes and often utilizing a key to operate.
6. a lumber defect describing stock that is not flat; the four types of warp are cup, bow, crook, and twist.
8. a safety device used in an upright position orientated to guide a workpiece past a cutter, blade, or bit, thereby keeping the operator’s hands at a safe distance.
9. to cut across the grain.
10. wood fibers that are oriented perpendicular to the surface of a piece of lumber (as seen on the ends of a board).
11. the smaller pair of surfaces (relative to the face) on a board that exhibits long grain.
12. the slot created by a blade or bit.
14. a piece of wood or plywood placed on the back side of a workpiece in order to provide support or minimize tear out.
17. to cut with the grain.
18. a device (usually on a router) that clamps a bit in place, sized for a specific bit or shank diameter, e.g., ¼” or ½”, and utilizing one or two wrenches to operate.

1. a dangerous situation in which a workpiece is forcibly ejected from a machine, often at tremendous speed.
4. a machine operation that exposes the operator to greater than average risk. A special setup requires instruction or aide approval prior to operating the machine.
5. a cylindrical block with knives or cutters positioned around its perimeter.
7. the largest pair of long-grain surfaces of a board.
13. a beam or board used to guide a workpiece past a blade or bit.
15. the pair of surfaces of a board that exhibits end grain.
16. out torn or damaged fibers, typically caused by a blade or bit exiting the workpiece.