Stop drawing tedious single lines and struggling with inaccurate diagonal seams. The Creative Grids® 15" Seam Guide Tool is a simple yet revolutionary notion for any quilter who regularly pieces half-square triangles, flying geese, or snowball blocks. Measuring a generous 15 inches long, this tool easily spans across standard 10-inch pre-cuts and large quilt blocks. It is engineered to be exactly 1/2-inch wide with a dashed center line. By simply aligning the center dash from corner to corner on your fabric, you can instantly mark two perfect 1/4-inch sewing lines on either side with just one placement. Backed by the patented Creative Grids non-slip grip, this guide locks onto your fabric, ensuring your marked lines are perfectly straight and your blocks turn out beautifully square.
Key Features
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Perfect 1/2-Inch Width: Designed to be exactly 1/2-inch wide so you can mark a 1/4-inch seam allowance on both sides of a diagonal center line simultaneously.
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Center Alignment Line: Features a crisp, dashed center line that allows you to easily align the tool directly over the corner-to-corner diagonal of your fabric squares.
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15-Inch Length: The generous 15-inch size easily reaches from corner to corner on standard 10-inch pre-cut squares (layer cakes) and larger patchwork blocks.
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Exclusive Non-Slip Grip: The back is coated with the signature Creative Grids translucent grip, grabbing the fabric securely to prevent slipping while you apply pressure with a marking pen.
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High-Visibility Markings: Printed with clear black and white graphics that stand out effortlessly on light fabrics, dark solids, and busy prints.
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Durable Acrylic: Machined from high-grade, durable acrylic that won't chip or warp, ensuring a perfectly straight edge for years of quilting.
Why Customers Love This Tool
Customers rave about this tool because it literally cuts their fabric marking time in half. Instead of trying to mark a center line and then carefully measuring out 1/4-inch on each side, you just line up the center dashed line with your block's corners and draw along both outside edges. Quilters particularly love the 15-inch length because it perfectly accommodates 10-inch layer cake squares without coming up short. The non-slip grip is a massive favorite because standard rulers tend to slide when hit with a fabric pen, causing crooked seams and wonky half-square triangles.
Perfect For
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Half-Square Triangles: The absolute best tool for marking quick, incredibly accurate sewing lines for HSTs.
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Pre-Cut Enthusiasts: Perfectly sized to span the diagonal of 10-inch fabric squares (layer cakes) with room to spare.
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Flying Geese & Snowballs: Ideal for accurately marking the stitch lines on corner triangles for stitch-and-flip techniques.
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Beginner Quilters: Takes all the guesswork and math out of finding the exact 1/4-inch seam allowance on diagonals.
Included Accessories
Specifications
Frequently Asked Questions
How do I use this tool to make half-square triangles? Simply align the dashed center line of the tool from corner to corner on the wrong side of your fabric square. Draw a line along both outer edges of the acrylic tool. You now have two perfectly spaced 1/4-inch sewing lines! Stitch directly on those lines and cut down the middle to reveal two perfect HSTs.
Will this fit across a 10-inch layer cake square? Yes! The diagonal of a 10-inch square is approximately 14.1 inches, making this 15-inch seam guide the perfect length to reach from corner to corner without coming up short.
Does it have the non-slip grip on the back? Yes, like all Creative Grids rulers, it features the exclusive non-slip grip coating that holds the fabric in place when slight downward pressure is applied, keeping your marking pen from pushing the ruler out of alignment.
