Best method for cutting 3/8" 7x19 stay??

[Ian McColgin]

Wrap it with duct tape or something equally strong, set up your vice with notched wooden jaw pads so you can hold firmly without crushing the wire, and go at it with a good hacksaw.

If you're doing it with the wire at the dangle from an already stepped mast, make a small pad for some ViceGrips and turn the hacksaw blade around so it cuts on the pull stroke. It's not hard to stiff arm the work still enough to cut.

G'luck