Cauldron Foundation Paper Piecing Pattern

Free to print · Intermediate · 39 pieces · 8 sections · 14″ block

Pattern diagram in the suggested fabrics. Every line is a seam.

A witch's cauldron: a round black pot with a gray rim, bubbling green brew, three square bubbles rising and two stubby legs, on plum.

Open and print this pattern

Opens in the free FPP tool. Pick your fabrics and block size, then print or download the PDF. No account needed.

Finished size: 14″ × 14″
Prints at: 4 to 18″
Pieces: 39
Sections: 8
Smallest piece: about 0.4 sq in at 14″
Fabrics: 6
Skill level: Intermediate
Price: Free, no sign-up
Using it: Use it for anything you sew, including quilts you sell. Please don't resell or repost the pattern itself; share a link to this page instead.

About this pattern

The Cauldron is a free foundation paper piecing (FPP) pattern from NiftyFifty: a 14-inch square block of 39 pieces sewn in 8 sections, using 6 fabrics, at a intermediate skill level. It opens in NiftyFifty's free browser-based FPP tool, which prints mirrored foundations with 1/4-inch seam allowance at 4 to 18 inches. Every seam is a straight line, so the whole block is sewn with the flip-and-sew method.

Piece map

Letters are sections, numbers are sewing order. Dashed lines outline each section's foundation.

How to sew it

Open and printOpen the pattern in the free FPP tool, pick your fabrics and a block size (4 to 18 inches), and print or download the PDF. Print at 100% and check the 1-inch test square.
Cut the foundations apartCut each section's foundation apart just outside its dashed line. The dashed line is the 1/4-inch seam allowance.
Sew each section in number orderSew all 8 sections on the foundation, piece 1 first, then 2, 3 and on. Flip, press and trim the seam to 1/4 inch after each one. When a section is done, trim it on its dashed line.
4
Join the sections
Show all 7 joins, in order
1. Join section A to section B along their shared straight seam.
2. Sew section C to the A+B assembly along their shared straight seam.
3. Join section D to section E along their shared straight seam.
4. Sew section F to the D+E assembly along their shared straight seam.
5. Sew section G to the D+E+F assembly along their shared straight seam.
6. Sew section H to the G+D+E+F assembly along their shared straight seam.
7. Join the A+B+C assembly to the H+G+D+E+F assembly.
Finish the blockPress, check that the block measures 14.5 inches square with seam allowance (14 inches finished), then tear the paper away.

Fabrics

Plum55% of the block, 27 pieces
Charcoal20% of the block, 3 pieces
Black17% of the block, 2 pieces
Sage4% of the block, 4 pieces
Slate3% of the block, 2 pieces
Forest2% of the block, 1 piece

Suggested colors. The printed pattern lists rough-cut sizes for whatever fabrics you choose.

Choosing a block size

Smaller blocks mean smaller pieces. Under about half a square inch, pieces get fiddly, so this one is most comfortable at 16″ and up.

Finished block	Smallest piece
6″ × 6″	about 0.1 sq in
8″ × 8″	about 0.1 sq in
10″ × 10″	about 0.2 sq in
12″ × 12″	about 0.3 sq in
14″ × 14″ (as drafted)	about 0.4 sq in
16″ × 16″	about 0.6 sq in

A sewing tip for this block

The pot is charcoal on the left and black on the right, so pick a charcoal that's clearly lighter. A lime or bright green print on the brew helps it glow against the plum.

What to make with it

Make it with the witch hat and the ghost for a Halloween table runner, or put it on a trick or treat bag.

Try it in other colors

Fill the pot with orange brew on a black background, or make purple potion bubbles on green. Every fabric can be swapped in the FPP tool before you print.

Make it yours: every pattern is a starting point

These patterns are free and open to change. Think of each one as a starting point, not a finished rule: remix it into your colors, your size, your idea.

1Open itEvery pattern opens in the free FPP tool, no account needed.
2Change anythingSwap fabrics, change the size, move or add seams. The sewing order and sections update on their own.
3Save it as yoursSave your version to a free account and share it. Other quilters can then remix yours, credited to you.

Open and remix this pattern

Questions

What can I make with the Cauldron block?

Make it with the witch hat and the ghost for a Halloween table runner, or put it on a trick or treat bag.

Is this cauldron FPP pattern free?

Yes. The Cauldron pattern is free to open, recolor and print, and you don't need an account. It opens in NiftyFifty's free FPP tool, which prints the foundations or downloads them as a PDF.

Is the Cauldron block good for beginners?

It's best once you have a few paper pieced blocks behind you: 39 pieces in 8 sections, so there are 7 joins to line up. Printing it larger makes every piece roomier.

How many pieces and sections does the Cauldron block have?

39 pieces in 8 sections, using 6 fabrics. Each section is sewn on its own foundation, then the sections are joined along straight seams. The printed pattern numbers every piece in sewing order.

What size does it print?

It's drafted as a 14-inch finished block, and you can print it at 4 to 18 inches. At 14 inches the smallest piece is about 0.4 square inches; at 6 inches it's about 0.1 square inches.

Can I sell quilts I make from the Cauldron pattern?

Yes. Use it for anything you sew, including quilts you sell. Please don't resell or repost the pattern itself; share a link to this page instead.

Is there a PDF of the cauldron pattern?

Yes. The FPP tool downloads a PDF with a 1-inch test square, a color key, an assembly map, the sewing order and every foundation drawn at exact size with 1/4-inch seam allowance. Print it at 100%.

Can I change the colors?

Yes. Open it in the FPP tool, click a piece, then click a fabric: over 600 real Kona and Bella solids plus thousands of prints. You can also move seams or add new ones before you print.

More like this

Part of: Free Halloween Foundation Paper Piecing Patterns. Or browse all free FPP patterns.

Want to draw your own? The free FPP pattern maker turns any drawing into a printable pattern, and the Pattern Designer builds pieced blocks on a grid.