Paper Pieces for English Paper Piecing

3-1/8" Half Square Triangles

3-1/8" Half Square Triangles - Main image
3-1/8" Half Square Triangles - View 23-1/8" Half Square Triangles - View 3
$6.84 $9.5 In stock

3-1/8" Half Square Triangles from Paper Pieces are paper and acrylic pieces for English paper piecing. Choose the product type that fits your project, from no-seam and seamed options to windowed versions and convenient pack sizes.

  • Available product types: No Seam, 1/4" Seam, 3/8" Seam, 1/4" Windowed, and 3/8" Windowed.
  • Pack options include Small Pack: 27 Pieces, Large Pack: 162 Pieces, and Bulk Pack: 324 Pieces.
  • Brand: Paper Pieces.
  • Listed under Half & Quarter Square Triangles and Triangles & Variations.
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Samuel ★★★★★

These 3-1/8 inch half-square triangles are cut with laser precision, so every single piece matches up perfectly when I sew them together. I got the windowed version, and being able to see my fabric through the hole saves so much time on alignment.

Sebastian ★★★★★

I was hesitant about paper piecing at first, but the pre-cut acrylic pieces save so much time. The seamed option makes alignment much easier for a beginner like me.

Mia A. ★★★★★

The windowed versions are a game changer for fussy cutting—I can see exactly where the fabric pattern lands before I stitch. The paper holds its shape through multiple passes without tearing, and the 3-1/8" finished size works perfectly for my scrappy quilt blocks.