If you want to generate the weight for the sheet length used x the full sheet width, you'll have to use some intermediate calculations in the nest reports. For example, you can multiply "Sheet Length Used" by "Sheet Width" and divide by 144 to get the area in square feet (I'm using Imperial Dimensions). Then divide "Sheet Part Blank Weight" by "Sheet Area Used" to get the pounds per square foot for the material, and then multiply that by the area you previously calculated to get your final weight for the nest. That's how we did it back when we used to have a coil fed plasma cutter.