why do you want binding to be 1" wide? Seen like that will really cut into the border by 1". you need to sewl the binding into the border that much to be sure you have batting in the binding. IMHO most bindings are only about 1/4" wide after being sew onto the quilt. at least that is what mine measure at. that being the case I cut my binding 2 1/2" wide, fold in half sew raw edges to the quilt then fold over and sew down. same as many others have said.