Clamshell is a very classic design! Traditionally, all those curves would be a problem, but not with the Zigzag Appliqué method! No curved piecing, no needle turning! Each panel of interfacing yields 20 clamshells, which finish at about 8" across. We recommend 10" squares of fabric, but anything larger than 8-1/2" works!

FIRST TIME USERS - Purchase the PACK which includes instructions and interfacing.