How to Make Quarter Square Triangles for Quilting

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Key Steps for Making Quarter Square Triangles
Step Details
1 Cut squares from fabric in your desired size, such as 5 inch squares
2 Draw a diagonal line on the back of each square from corner to corner
3 Align 2 squares with right sides together, sewing 1⁄4” away from drawn line on both sides
4 Cut along drawn diagonal line to yield 2 quarter square triangles
5 Trim dog ears from seam corners and press open
6 Repeat with desired number of squares for your quilt project

FAQ

How do I cut fabric squares for quarter square triangles?

  1. Start by cutting a fabric square to your desired finished size plus 1/2 inch for seam allowances. For example, if you want a 3 inch finished quarter square triangle, cut a 3 1/2 inch square.
  2. Place two different fabric squares right sides together, aligning the edges. These will kind of, like, make up your quarter square triangles.
  3. Draw a line diagonally from one corner to the opposite corner on the lighter fabric. This line will be your sewing guideline.
  4. Sew a 1/4 inch seam allowance on both sides of the drawn diagonal line. Careful not to sew directly on the line because that may mess things up!
  5. Cut the square apart along the drawn diagonal line. Voila! You’ll have two quarter square triangles. Pretty nifty if you ask me.

What size squares do I need to make a 6 inch quarter square triangle?

To make a 6 inch finished quarter square triangle, you’ll wanna begin with 6 1/2 inch squares (6 inch plus 1/2 inch for the seam allowance). Then follow the steps above to cut and sew them. Presto – 6 inch quarter square triangles! Ain’t math fun?

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Can I use different fabrics for the quarter square triangles?

You sure can! In fact, quarter square triangles really pop when you use contrasting fabrics. I’d stick to just 2 fabrics though, instead of multiple scraps. Keeps things clean and simple, ya dig?

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What can I make with quarter square triangles?

Loads of stuff! Quarter square triangles are kinda like building blocks for quilters. You can assemble them into squares, lattices, argyle patterns, pinwheels and kaleidoscopes. Really, the possibilities are endless. Wherever your imagination takes you is where you can go. Pretty rad!

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Any tips for matching points accurately?

No doubt about it, precisely matching points can get tricky with quarter square triangles. A few hot tips:

  1. Use a precision 1/4 inch foot when sewing for maximum accuracy.
  2. Nest the seams and points against each other and pin thoroughly before sewing.
  3. Pay attention to grainlines so bias edges don’t get stretched or distorted.
  4. Take things slowly and check matching frequently.

It takes practice, but you’ll get the hang of it! And any boo-boos just add to the handmade charm.