01What the Base Does
The base bolts the vise to the bench and carries every load you put into the jaws. Its design is one of the first things to compare, alongside jaw and body construction.
02Fixed Base: Nothing Moves
A fixed base is a single casting bolted straight to the bench. There is no swivel joint to shift or loosen, so it gives the most direct, dead-solid feel — and it usually costs less. For work where the jaws only ever point one way, it is the stronger choice.
03Swivel Base: Rotate to the Work
A swivel base adds a locking plate: loosen two bolts, turn the vise to the angle you want, and lock it down. Instead of walking around a long part, you swing the 6″ medium-duty bench vise to meet it. Standard on most medium and heavy workshop vises.
04When Swivel Is Worth It
Long or awkward parts, automotive work and any job where you approach from several sides all favor a swivel. The ability to reposition without unclamping and re-clamping saves time on every piece. The heavy-duty 6″ model adds the mass to keep those angles rigid.
05Rigidity Is the Whole Trade
A swivel joint is only as good as its lock: a weak lock flexes and steals clamping force from the workpiece. That is why base mass and the body material matter more, not less, on a swivel model — the joint must be as solid as a fixed base.
06Making the Call
Choose fixed for maximum rigidity and simplicity; choose swivel for versatility. The choosing guide balances the base against jaw, opening and duty class. A dedicated swivel-specialist model covers jobs built around rotation.
For OEM ranges, the manufacturing team supplies either base on the same body platform.