This was a fairly easy process.
1) Tighten one of the wire ends to a screw and keep the wire as taut as possible while wrapping it through the grid. Brace the grid against a corner wall, or held within a vice (don't over tighten in this instance).
2) Be sure to have the second screw ready to tighten, and again, keep the wire taut as you wrap it around this screw. It may take some re-wrapping to eliminate slack.
3) After the lower wrapped section is complete, repeat for the upper wire grid.
The wire is quite sturdy, and following my first attempt the installation worked perfectly. Excellent cube cutting has returned.