What device is used to support work in a vise during drilling and should be kept close to the work?

• A. Parallels
• B. Vise jaws
• C. Clamps
• D. Shims

Answer: (A)

Parallels are used to support work in a vise during drilling because they provide a precise, repeatable base between the stock and the jaws. By placing parallels under the work, you raise it to the correct height so the drill bit can enter without the jaws interfering, while still allowing a strong clamp on the stock. Keeping the parallels close to the work minimizes cantilever forces, helps keep the piece square to the drill axis, and distributes clamping pressure more evenly through the entire setup rather than concentrating it on the surface of the work. This is especially important for thin or delicate pieces that could be marred or deformed by direct contact with the jaws. Other devices like clamps or shims can be used in conjunction with the vise, but they don’t provide the dedicated, close-to-the-work support that parallels offer, which is why parallels are the best choice here.