Originally Posted by
Onebyone
When I find a fabric sale I always buy some with backings in mind. My rule is 2x the length of the quilt. I always have enough using that measure.
That rule would work if your quilt is not wider than approx 80". In this case, the quilt is very large, 105", which is wider than two widths of fabric: 42" wide x 2= 84" would not be wide enough for this one. I have never made a quilt this large, so your rule of thumb would work for me, but not for this one.