counter-drill
Học thuậtThân thiện
Definition
- Verb:
- To drill in an opposite direction: The action of drilling a hole or making a bore in a direction that is opposite to a previous or standard drilling direction. This is often done to correct an error, to create a specific alignment, or to perform a technical operation in manufacturing or construction.
Usage Examples
- Verb:
- The machinist had to counter-drill the hole to align it properly with the other component.
- If you drill at the wrong angle, you may need to counter-drill from the other side to fix the mistake.
Advanced Usage
- Technical/Manufacturing Context: The term is primarily used in technical fields such as machining, metalworking, carpentry, and engineering. It implies a corrective or precision-based action.
- The blueprint specified to counter-drill the pilot hole to accommodate the screw head.
Variants and Related Words
- Counterbore (noun/verb): A related machining operation that enlarges a hole to a specific diameter for part of its depth, often to allow a screw or bolt head to sit flush. While similar, "counterbore" typically refers to enlarging an existing hole's diameter, whereas "counter-drill" emphasizes drilling in an opposite direction.
- Countersink (noun/verb): To cut a conical-shaped enlargement at the end of a hole for a screw or bolt. This is a different specific operation from counter-drilling.
Synonyms
- Redrill: To drill again, which may or may not be in an opposite direction.
- Reverse-drill: A less common, descriptive synonym for the action of drilling in the opposite direction.
Notes on Meaning
- The word "counter-drill" is a compound verb formed from "counter-" (meaning opposite or opposing) and "drill." Its meaning is highly specific to the action described and is not used in a general or figurative sense. It does not refer to a type of protest or military exercise, which might be inferred from the separate words "counter" and "drill."
Verb
- drill in an opposite direction