- Place a 2-1/4" medium-gray square right side up on the unprinted side of the foundation, centering it within the square at the block's center. Hold in place with a pin or dab of glue stick.
- Place a triangle cut from a 2-1/4" medium-dark charcoal square right side down along one side of the square. Hold in place and turn the foundation over.
- Sew on the line that separates the two patches you've just positioned, beginning and ending a few stitches on either side of the line.
- Flip the new patch right side up and hold the foundation to the light, right side facing you. The triangle should extend about 1/4" past each line that defines its shape. If it does, even-up the seam allowance and finger press the triangle in place.
- Use the same technique to add another triangle to the opposite side of the square. Repeat to sew triangles to the top and bottom of the square. (It's fine to work in a circular fashion instead of moving back and forth across the block.)
- Use long strips of fabric to sew the remaining narrow "logs" to the pineapple, moving outwards from the center and sewing all patches in a row in a circular motion before moving to the next row. Use the notes on your foundation as a guide to fabric placement.
Check each patch after sewing it, making sure its edges overlap the patch's boundary lines by enough to create a stable seam allowance when those lines become seams.
Be sure to trim excess fabric tails and bulky seams after each seam is sewn.
- Sew light triangles from 3" squares to outer corners. Their edges should extend slightly past the foundation's outermost line.
- Press and trim through all layers on the outermost line. Make 16 more identical blocks.