A question on here brought up another question for me. Many of my quilting books, including the reference guides, give instructions for every width bias binding except 2 1/2 inch, using the bias methods. MOST people I know use 2 1/2 inch binding, so what's with these authors leaving out the most obvious and commonly used size from their instructions? I have long since made a laminated sheet of the instructions that *I* use, but am just wondering. This has got to be annoying to beginners.
I refer to instructions for making continuous binding from squares. I since discovered Shelley Roger's mathematical instructions, so can calculate it out myself for either rectangles or squares.