Which part of the milling vise is typically stationary when securing a rectangular part to finish a side?

Which part of the milling vise is typically stationary when securing a rectangular part to finish a side?

• A. Solid jaw
• B. Moveable jaw
• C. Parallels
• D. Base

Answer: (A)

When you clamp a rectangular workpiece to finish a side, you want a rigid, unmoving reference surface. The solid jaw provides that stationary surface in a milling vise. It stays fixed in the vise while you tighten the movable jaw against the opposite face to hold the part securely. This setup keeps the edge being machined true to the fixed jaw and stable during the cut. The base is simply what mounts the vise to the table, not a clamping surface for the work. Parallels are used to adjust height or ensure parallelism, not to serve as the clamping face.

When you clamp a rectangular workpiece to finish a side, you want a rigid, unmoving reference surface. The solid jaw provides that stationary surface in a milling vise. It stays fixed in the vise while you tighten the movable jaw against the opposite face to hold the part securely. This setup keeps the edge being machined true to the fixed jaw and stable during the cut. The base is simply what mounts the vise to the table, not a clamping surface for the work. Parallels are used to adjust height or ensure parallelism, not to serve as the clamping face.