Joyce's Mystery Quilt Block

Perfect Points can be YOURS with Paper Piecing!

by Julie Baird

This post contains affiliate links for which I receive compensation.

Joyce's Mystery quilt block tutorial

Skill Level: Confident Beginner

Grid: 6x6

A Joyce's Mystery quilt block looks like it might be a prickly little thing to make.

But don't let all those points fool you!

Paperpiecing is the great equalizer. If you can sew on a line, you CAN make this block. And staying on the line is even easier once you slow your machine speed.

Let's take the mystery out of Joyce's block!

General Instructions

For paperpiecing, reduce your stitch length to 15-18 stitches to the inch. This makes more holes in the pattern making the paper easier to remove at the end.

More stitches also reduces the amount of stress on each individual stitch as the paper is torn away.

Open toe applique footOpen Toe
Applique Foot

If you have one, install an open toe applique foot. It makes it so much easier to see the line as you're stitching.

Should you have a hard time removing the paper from your finished units, try using a larger, 90/14, needle. Personally, I regularly use a 80/12 without a problem.

What's important, though, is what works BEST for YOU!

All the seams in the units run from one outside edge to the other. Start and end all your seams a 1/4" from the beginning and ending of each solid stitching line.

And finally, sew slower. If you've got a speed control dial on your machine, dial it down. Staying on the line is crucial to a block that virtually puts itself together.

Step 1: Download and print the patterns

To download any of the Joyce's Mystery block patterns, you MUST HAVE ADOBE READER installed on your computer. Get it here if you don't already have it.

Next, open the downloaded file, and select the "Print" option.

To print blocks at the correct size, under 'Page Sizing and Handling' in the Adobe print menu, set 'Custom Scale' to 100%. Click here to see what it looks like on the Print Menu page.

If you use something other than Adobe, you'll need to set 'Page Scaling' to 'None' to print at '100%'. Printing at 'Actual Size' tends to print blocks at weird sizes.

Once you've printed your pattern, use the information on the page to measure your block to confirm that it printed at the correct size. Most pages include a 1" square graphic to help you make this determination.

Choose the size you want and print from the links contained with the chart below.

PRINT the Joyce's Mystery Paper Piecing Patterns
Block Size
# of
copies to print
Link to
PDF Pattern

Step 2: Cutting

Joyce's Mystery quilt block designJoyce's Mystery

There should be a strong contrast between the A and B fabrics so that the points don't get lost.

For smaller blocks, choose fabrics that read as a solid—tone-on-tone, low contrast designs or actual solid fabrics.

The center of the 9" block is large enough (4-1/4" finished) for a 4" machine embroidery design as along as it looks good on-point.

All the measurements in the cutting chart are for squares, i.e. 2-5/8" means to cut a 2-5/8" x 2-5/8" square.

Remember to subcut units #2-#6.

Generations Quilt Patterns logo

Cutting Chart for a
Joyce's Mystery Quilt Block

~ Paper Piecing ~

Patch Fabric Qty Finished Block Size Sub
4 1/2" 6"9"
1Background1 2 5/8" 3 3/8" 4 3/4" na
2, 3 Dark 2 2 7/8" 3 3/8" 4 3/8" Symbol for a half square triangle
4 Dark 1 3 1/8" 3 5/8" 4 5/8" Symbol for a quarter square triangle
5 Background 2 3 1/8" 3 5/8" 4 5/8" Symbol for a quarter square triangle
6 Medium 4 2 1/8" 2 3/8" 2 7/8" Symbol for a half square triangle
7 Medium 4 1-1/4” 1-1/2” 2” na
Unfinished Block Size 5 " 6 1/2" 9 1/2" na
Grid Size 3/4" 1" 1 1/2" na

Oliso Smart Iron

Step 3: Stitch the Joyce's Mystery units


Joyce's Mystery quilt block - center units

Make 1

Use a dot of Elmer's Washable glue stick to position the wrong side of #1 to the unmarked side of the pattern. The dashed placement guides make this quick, easy and accurate.

Position #1Arrows point to the placement guides.

With right sides together (RST) align the long edge of a #2 with #1. The point of #2 should lineup directly with the corner of the #2 patch on the pattern. (arrow)

Layer #1 and #2, right sides together.


Stitch #2 to #1.Remember to start and stop a quarter inch beyond the solid stitching line.

Add the second #2. Press both seams.

Repeat the process for the #3s. Before pressing, trim away the dog ears with a scissor to reduce bulk.

Trim away the dog earsArrows point to where the dogears USED to be.


Trim the center to size. This is the finished center after removing the paper. As long as you stitched directly on the line, the points are a perfect 1/4" from the edges.

The finished center square in a square.


Make 4

Joyce's Mystery quilt block - side units

With a bit of Elmer's glue stick, position #4 on the unprinted side of the pattern using the dashed guidelines.

Glue the wrong side of #4 to the unprinted side of the pattern

With RST align the short edge of a #5 with either the left or right side of #4.

To minimize any trimming, position the #5 patch so that it extends a 1/4" past the printed line between #5 and #6 (right arrow below).

Position #5 with #4.


Stitch on the line between #4 and #5Again, start and stop a quarter inch beyond the solid stitching line (arows).

Repeat for the second #5 and press.

Trim the seam allowance to 1/4" if it needs it.

With RST, align the long edge of #6 with the trimmed edge of #5.

Position #6, right sides together with #6.Line up the corner of the #6 patch with the corner of the pattern (red arrow).

Stitch and repeat for the other #6. Cut away any dog ears with a scissor to reduce bulk.

A side unit after stitching the #6s and trimming a single dog ear.A dog ear has been trimmed away at the arrow...only one left!


At this point. the untrimmed side units look like a hot mess!

The untrimmed sidesPretty messy looking,!!

Cut the side units down to size with your rotary cutter and ruler and using the outlines of the block as guides. (I use my rotating Olfa mat for this.)

The 1/4" mark on my ruler (arrow) is laid directly on top of the solid black outline around the unit. The excess is cut away. This is repeated for every side of every unit.

Trim the side units to size.The arrow points to the 1/4" line.

Remove the paper from the units after they are all stitched.

Step 4: Assemble the Joyce's Mystery quilt block

The paperpiecing is finished.

Install your favorite 1/4" foot and return the stitch length to what you normally use for piecing.

Arrange the patches (including the cut squares for the corners) into the Joyce's Mystery design.

Arrange the Joyce's Mystery units into rows

Stitch the units in each row together, pressing the SA away from the side units to reduce bulk.

Stitch the patches into rows.

Stitch the rows together. I used pins to match the seams between the units, but didn't have to worry about the points in the valleys of the sides. Sewing directly on the lines makes for perfect quarter inch seams.

Stitching the rows togetherI've used pins to help match the seamlines and hold the beginning and ending edges even.

After the sewing is complete, the last step to complete this Joyce's Mystery quilt block is to press...using my favorite pressing technique!

This is the finished block.

The Joyce's Mystery quilt block is finishedA finished Joyce's Mystery quilt block.

Link to Free Quilt Block Patterns Library

Share your work to inspire other Quilters!

If you use our tutorials to make your blocks and quilts, there are some easy ways to share your creations so other quilters (including me!) can enjoy the fruits of your labor:

Please share your creations on social media with the hashtag #GenerationsQuiltPatterns. Thank you!
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  • Visit our Show n'Tell page on the website. Click here to share photos and tell your own story, just start typing at 'The name of your quilt is...'. If you'd prefer to submit more photos than the form allows, simply email them to me at

I love seeing your work!

Our readers do, too!

For even more blocks to make...

Click here to learn about my favorite quilt book resources that inspire my patchwork designs.

For you, are quilt block patterns like potato chips... can't have just one?!!

Check the amazing resources I rely on for the majority of the quilt block designs you see on this website. 

To see if they're worthy of spot in YOUR quilting library, CLICK HERE.

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The serrated edge on this short-bladed scissor make it easy to trim seam allowances—my all-time favorite scissor.

For other sizes, click here.

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