Online Tutorial from a pro workroom how to make a lined Roman Blind, step three calculating fabric quantities, number of metres required.
I'm going to be using a heavy fabric from Nina Campbell. It has a dual purpose of upholstery/curtain. In this case, would you stand by the 2.2 fullness ratio for the double pinch pleat curtains? The calculator has wildly varying results depending on whether I tick the box to round the...