pilot hole

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pilot hole

- A small hole drilled or hammered for the insertion of a nail or screw, or for drilling a larger hole.
See also related terms for insertion.
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References in periodicals archive ?
Drilling a pilot holes before starting full production of a gas field is important because they remove the risk of pockets of shallow gas being found above the gas field.
They're also labor savers because they zip right into thick, dense framing lumber with just a cordless drill/driver--no need for pilot holes.
The company decided to use directional drilling because it will reduce costs by allowing multiple pierce points from three deep pilot holes and will also allow more accurate targeting.
This operation required each drill rig to simultaneously drill toward one another from both land-based locations until the pilot holes could intersect at a predetermined location near the middle of the crossing.
Step 4: Predrill an even spread of pilot holes along cut edge of wider piece of door.
Using a wood bit in your drill driver make pilot holes through the timber battens.
Also make pilot holes for the optional 1-1/2" #6 wood screws.
Using the 18V drill driver and 3mm drill bit, drill pilot holes where your markings are.
Drilling pilot holes - If you need to drill a large diameter hole many tradesmen advise a pilot hole first.
Added options include matching curved face frames, curved accessory mouldings, and the boring and drilling of pilot holes for hinges.
Make sure there is nothing blocking the three pilot holes on the bracket.
When you're sure that the door will move freely, drill the rest of the pilot holes and screw in the rest of the screws to secure the hinges.