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Seam lines shown. The colors show which fabric goes where. You pick the fabrics on the Design Wall.

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Card Trick

Four interwoven 'cards' on a nine-patch grid. The corners are half-square triangles (background point with a card color); the four sides are two-color HSTs where neighboring cards overlap; the center is a quarter-square triangle that pins all four cards together. Drafted here in two card colors so opposite cards share a fabric.

Cut list

What to cut for one 12 inch finished block. A quarter inch seam allowance is already in every size.

Feature

1 square
5¼"Cut twice on the diagonal, layered with the accent fabric. Each square makes 4 triangles. This block uses 2.
1 square
4⅞"Cut once on the diagonal, layered with the background fabric. Each square makes 2 triangles.
2 squares
4⅞"Cut once on the diagonal, layered with the accent fabric. Each square makes 2 triangles.

Accent

1 square
5¼"Cut twice on the diagonal, layered with the feature fabric. Each square makes 4 triangles. This block uses 2.
1 square
4⅞"Cut once on the diagonal, layered with the background fabric. Each square makes 2 triangles.
2 squares
4⅞"Cut once on the diagonal, layered with the feature fabric. Each square makes 2 triangles.

Background

1 square
4⅞"Cut once on the diagonal, layered with the feature fabric. Each square makes 2 triangles.
1 square
4⅞"Cut once on the diagonal, layered with the accent fabric. Each square makes 2 triangles.
By region
Every region of the Card Trick block, the units it needs, and what they are cut from
RegionUnitsCut from
Top Left Background14⅞" square, cut once on the diagonal
Top Left Card14⅞" square, cut once on the diagonal
Top Right Background14⅞" square, cut once on the diagonal
Top Right Card14⅞" square, cut once on the diagonal
Bottom Right Background14⅞" square, cut once on the diagonal
Bottom Right Card14⅞" square, cut once on the diagonal
Bottom Left Background14⅞" square, cut once on the diagonal
Bottom Left Card14⅞" square, cut once on the diagonal
Top Card Left14⅞" square, cut once on the diagonal
Top Card Right14⅞" square, cut once on the diagonal
Right Card Top14⅞" square, cut once on the diagonal
Right Card Bottom14⅞" square, cut once on the diagonal
Bottom Card Right14⅞" square, cut once on the diagonal
Bottom Card Left14⅞" square, cut once on the diagonal
Left Card Top14⅞" square, cut once on the diagonal
Left Card Bottom14⅞" square, cut once on the diagonal
Center Top15¼" square, cut twice on the diagonal
Center Right15¼" square, cut twice on the diagonal
Center Bottom15¼" square, cut twice on the diagonal
Center Left15¼" square, cut twice on the diagonal

How it goes together

  1. Step 1

    Cut your pieces

    Cut the pieces in the cut list. The sizes are for a 12 inch finished Card Trick block and already include a quarter inch seam allowance.

  2. Step 2

    Make the quarter-square triangle and half-square triangle units

    Join the quarter-square triangles in pairs along their short edges, then join the pairs. Sew each pair of triangles along its long edge and press toward the darker fabric. Trim every unit to size before you join it.

  3. Step 3

    Assemble the block

    Join the units into rows, then join the rows. Press as you go and square the finished block to size.

Try the Card Trick on a real layout.

Open it on the Design Wall. Try a few colors, see the math, change your mind.