Captivating Clamshell Cushion Pattern


This dramatic clamshell cushion is made using precut iron-on interfacing clamshell templates and Stonehenge Gradation strips.

Kits are available!

Finished size: 16″ x 16″



Finished size 16″ x 16″









Supplies required to make this pattern:

Fabric (based on 40″ fabric width) Quantity Size
Half a package of Stonehenge Gradation Strips (20 strips)
OR 8 different fabrics for the clamshells:
Fabric 1 (lightest)
Fabrics 2-7
Fabric 8 (darkest)
2-1/2″ x 40″
Batting (if quilting the clamshells) 1 20″ x 20″
Backing (if quilting the clamshells) 1 20″ x 20″
Cushion back* 1 17″ x 17″

* Cushion back may also be pieced with remaining 2-1/2″ strips.

Clamshell Templates

113 @ 2-inch clamshell templates*
* we recommend Hugs’n Kisses precut iron-on interfacing hexagon templates available in packages of 100

OR 1 m. of Apliquick interfacing
OR Wash-Away Appliqué Sheets
OR 1 m. of freezer paper

Other Supplies

Water-soluble glue stick
Apliquick rods (optional but helpful)
Thread: Monofilament (invisible thread) with a neutral bobbin
OR Different colored threads to match each fabric
12″ zipper (optional)
16″ pillow form

Additional information

Weight 0.03 kg
Dimensions 28 × 22 × .2 cm


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