From
http://www.quilt.com/HowTo/FoundationHowToPage.html: "For hand piecing, foundations must be transferred to a cloth backing such as
muslin. There are several sources for foundation paper blocks. They may be
purchased already printed, they may be photocopied from several books currently
available on foundation paper piecing, or they can be drawn by hand or by using
a computer drawing program. For foundation piecing by hand, the pattern must be
transferred to the backing fabric. Muslin with freezer paper ironed on to the
back can be fed through many computer printers. The quilter is advised to check
his/her printer manual to see if this option is possible."