Some of you may be interested in looking at the Excel spreadsheet I have uploaded to the forum (Bras section). It’s a negative ease calculator, you can type in your “skin fit” body measurements in column A and then you test stretch a 20cm x 20cm square of Powernet then type in the stretched measurements (warp and weft directions) in boxes and the body measurements in columns C, D change to the negative ease measurements.
For people who are trying to understand negative ease and its calculations you can take a look at my articles on making a corselet in the Bra making section.
Corset Hugs
Mark.