Which type of clamps is commonly used for holding wood pieces together during glue-up?

The correct answer is "All of the above" because each type of clamp mentioned has specific features that make them effective for holding wood pieces together during glue-up processes.

Quick-release clamps are designed for rapid adjustments and can apply even pressure quickly, making them ideal for lighter or smaller glue-ups where speed is essential. Their adjustable design allows for flexibility when working with various sizes of wood pieces.

Bar clamps are commonly used in woodworking due to their ability to exert significant pressure over a long span, making them particularly useful for gluing wide panels or larger assemblies. They are adaptable and can accommodate different thicknesses of wood, which is beneficial for a variety of projects.

Pipe clamps function similarly to bar clamps but use a pipe for the clamping mechanism. They are versatile and can be easily adjusted to clamp different sizes of workpieces simply by cutting the pipe to length. Their strong holding power makes them excellent choices for large surface areas or heavy-duty applications.

Since each of these types of clamps is suitable for gluing wood pieces together, the comprehensive nature of the answer "All of the above" reflects the versatility and effectiveness of various clamping methods in cabinetry and woodworking projects.