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In quilting, a quarter-square-triangle only sounds scarier than it is

In quilting, a quarter-square-triangle only sounds scarier than it is

by Paul Leger

You might have guessed by the title that today’s post is about making quarter-square-triangles (QST). It sounds scarier than it is. It’s very easy too.

In yesterday’s post, I talked about the importance of having a selection of thread in 12 basic neutral colors like the GÜTERMANN 12 pc Sew-All 100m Thread Set – Neutral Colours for piecing. I also mentioned that GÜTERMANN 12 pc Sew-All 100m Thread Set – Primary Colours has many basic colors should you need a thread color to match.

A Quarter — square – triangle block made of yellow and orange fabrics.

Quarter square triangle quilt block

A Gütermann 12 pc sew-all 100m thread set in neutral colors and a second Gütermann 12 pc sew-all 100m thread set in all the primary colors.

Gütermann 12 pc sew-all 100m thread sets

Before I demonstrate how to make QSTs I want to suggest sewing needles. My go-to is SCHMETZ needles. For new quilters, I recommend SCHMETZ #1739 Piecing & Quilting Needles Pack Carded – Assorted – 5 count. This pack has two size needles which are naturally great for sewing and to try different size threads.

A package of SCHMETS #1739 quilting needles in sizes 75/11 and 90/14.

SCHMETZ 1739 quilting needles in size 75/11 and 90/14

Let’s get to making QST.

In my first post this week I indicated a 3½” x 3½” square needed to be cut to make a 3” x 3” finish square.

In my second post, I said to make half square triangles (HST) the size of the squares measuring 3⅞” x 3⅞” would make 3” x 3” finished HSTs.

And here I’m showing you my method for making QSTs. To make a QSTs a 1¼” must be added to the desired finished size of the QST. For this reason. I’ll be cutting one 4¼” x width of fabric (WOF) strips of the orange and yellow fabrics. Once everything is sewn, it’ll be a 3” x 3” finished QSTs.

Eight QSTs are needed to complete today’s two blocks. From the 4¼” strips cut four 4¼” x 4¼” squares from both the orange and yellow farics. From every two 4¼” x 4¼” squares, two QST will be made.

On the back of the four orange fabric pieces, I made two diagonal lines from corner to corner. I then took the yellow 4¼” x 4¼” squares and matched them to the orange 4¼” x 4¼” squares (right sides together) and pinned them.

Diagonal lines are drawn on the back of four 4¼” x 4¼” orange squares and pinned to four 4¼” x 4¼” yellow squares.

Diagonal lines drawn on 4¼” x 4¼” squares.

Sew on the right side of the diagonal line but sew no further than where the lines intersect. See the next photo.

Note: Black thread was used so it would show up better on the photo.

A seam is sewn ¼” away from the diagonal lines stopping when it gets to the intersecting diagonal line.

Sew ¼” away from the diagonal lines.

Cut along both diagonal lines.

A fabric square sewn to a yellow fabric is cut on the diagonal lines.

Cut on diagonal lines.

Once cuts are made, press open.

Two sets of orange and yellow triangles are pressed open.

Press open.

Match two half sets of QSTs on the longest side and sew. Repeat this step eight times to join all QSTs. Trim to 3½” x 3½” if required.

A QST is trimmed to 3½” x 3½” using a sew Easy 6½” x 12” ruler.

Trim edges of QSTs if necessary.

Cut another 3½” x WOF strip from both the yellow and orange fabrics. From those strips cut two 3½” x 3½” orange squares then eight 3½” x 3½” yellow squares.

Sew four QSTs to 3½” x 3½” yellow squares. Make sure one of the orange sides of the QST is sewn to the yellow fabric. Then sew two QSTs to 3½” x 3½” orange squares. This time making sure one of the yellow sides of the QST is sewn to the orange fabric.

Two QSTs are sewn, one to an orange 3½” x 3½” square and the other to a yellow 3½” x 3½” square.

Sewn pairs.

On the four QST/yellow sets, sew the four remaining yellow 3½” x 3½” squares. Then sew the two QST/orange sets and sew the two remaining QSTs.

A QST is sewn to two yellow 3½” x 3½” squares. Two other QSTs are sewn to an orange 3½” x 3½” square.

Make rows.

Sew the rows together as shown in the photo to complete the quilt blocks.

Two completed QST blocks are placed side by side.

Two completed quilt blocks.

With these two blocks completed, this ends today’s tutorial.

Remember to have some SCHMETZ #1739 Piecing & Quilting Needles Pack Carded – Assorted – 5 count close to the sewing machine.

As quilters and sewists, do check out all the other types and varieties of needles SCHMETZ offers. There is a type for all possible sewing projects. The variety is amazing. The next photo is only a small sample of some of the many needles from the SCHMETZ collection.

A variety of nine different types of sewing machine needles are offered by SCHMETZ.

Sew many SCHMETZ needles!

Tomorrow, I’ll show you another method to make HSTs for the last two blocks needed to complete this sunny crib quilt! Join me!

This is part 3 of 5 in this series

Go back to part 2: Piecing shoo fly quilt blocks with Gütermann thread [a great notion]

Go to part 4: The underappreciated seam ripper, UNIQUE sewing makes ripping easier


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