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Sewing a square bag with a zipper | "Manta" bag

11.10.2017 by Sabine Schmidt

Eckige Tasche mit Reißverschluss nähen | Tasche "Manta"

The square bag with a zipper is one of a kind. A simple pattern that transforms into an extravagant bag called Manta. Mysterious. Unusual. And also unusually beautiful. :)

We are sewing a square bag with a zipper :)

Sewing this square bag with a zipper is at least as much fun as using it! ;)

What a discovery it is to sew a bag from a square and two rectangles that has such an incredible and extraordinary shape! It is a mixture of a geometric figure, an eccentric designer piece, a grumpy bulldog, and a manta ray. By the way, this special shape is called a biscornu.

Enigmatic. Spacious and practical. And simply mega beautiful!


Sewing a square bag with a zipper

I already know that the girls will go crazy for it at our family Christmas party!

That's why I've already started a series production.

In this case, that’s the easiest thing in the world. Sewing the square bag with a zipper means you can sit at your sewing machine or on the sofa. We already followed this principle with our Kosma cosmetic bag.

With the Manta, it's even easier. Because you only have straight seams. You occasionally have to turn left or right. But that's all there is to it.

So, anyone who likes to sew while having a nice chat with their best friend, while watching TV or YouTube, or who wants to sew while sitting on the balcony should definitely sew our Manta bag.

What’s especially cool is that the parts are quite small, so you can easily pack them into a project bag and take them with you.

You can finish the edges of the bag pieces with bias tape or turn them right side out, just as you like.

Both look great, I think.


Sewing a square bag with a zipper

And because the square bag with a zipper is so easy, you can also make the pattern for it yourself in any size you like.

You always need a square base. This determines how big the bag will be.

And then you need two rectangles that are just as long but only half as wide as your square.

I’ve drawn an example for you here so you know what I mean:


Sewing a square bag with a zipper

With a base of 20 x 20 centimeters, the bag will measure approximately 19 x 20 cm from corner to corner.

It will then be 7 centimeters high.

You can also use the reduced basic pattern to sew a cute coin purse or a keychain. However, I find that from an edge length of about 8 centimeters, it gets a bit fiddly with the zipper. :)


Sewing a square bag with a zipper - Fabric cutting


Sewing a square bag with a zipper

What you need for sewing:

  • Each of the 3 pattern pieces cut 1x from outer fabric, 1x from lining fabric, 1x from sturdy fleece interfacing (in the instructions, I used my prized iron-on padding*; Style-vil* is also wonderful because it always springs back into its original shape)
  • If you prefer to use thin interfacing, you can iron e.g. Vlieseline H 250* or Vlieseline H 640* onto the outer and lining fabric. You can vary this as well.
  • Almost 2 meters of bias tape
  • If you like a loop: 1 piece of ribbon
  • In addition spray adhesive*, sewing pins, needle and transparent nylon thread*, embroidery scissors
  • 22 cm zipper* (to create a contrast to the angularity of the bag, I chose zippers with a ring on the pull; I ordered them from Amazon*). This is what they look like:
*

Links marked with * are affiliate links: If you make a purchase through them, we receive a small commission. The price remains the same for you.

Step-by-step instructions

Instruction 1 / 2

Sew the Manta bag — with bias binding

Variation with bias binding. The individual bag pieces (1 square, 2 rectangles) are reinforced with interfacing, finished with bias binding and then sewn together with a magic seam.

  1. Step

    Join the outer fabric and fleece and quilt

    Join the outer fabric and fleece interfacing with basting spray.

    Quilt the outer fabric onto the fleece in any pattern you like. Repeat for both rectangles.

    Join the outer fabric and fleece and quilt
  2. Step

    Add the lining and finish with bias binding

    Place the lining fabric wrong side down on the fleece, pin everything well and finish the pattern piece all the way around with bias binding.

    Add the lining and finish with bias binding
  3. Step

    Sew the rectangles to the zipper

    Sew the two rectangles, lining side down, onto the right side of the zipper. Use a longer straight stitch and backstitch well at the beginning and end.

    Then shorten the zipper and finish it with bias binding.

    Sew the rectangles to the zipper
  4. Step

    Mark the centres and place the square

    Mark the centre of all long sides with a disappearing marker.

    Place the square pattern piece wrong sides together on the zipper piece.

    Mark the centres and place the square
  5. Step

    Sew the bag together with a ladder stitch

    Sew the bag together by hand all the way around with a ladder stitch. Make sure the corners and centres meet neatly.

    The zipper ends disappear inside the bag.

    Sew the bag together with a ladder stitch

Instruction 2 / 2

Sew the Manta bag — with bagged-out pieces

Alternative variation: the bag pieces are turned right side out (bagged out) instead of finished with bias binding. Reinforce the outer fabric with Vlieseline H 250 and the inner fabric with Vlieseline H 640.

  1. Step

    Bag out the outer and lining fabric

    Place the outer fabric and lining right sides together and sew them together with a straight stitch.

    Leave a turning gap of about 5 cm on one of the long sides.

    Bag out the outer and lining fabric
  2. Step

    Trim the corners, turn and press

    Trim the seam allowances at the corners and turn the bag piece right side out.

    Shape all seams with a wooden spoon and press.

    Trim the corners, turn and press
  3. Step

    Attach loops with eyelets

    Once all three bag pieces are prepared, attach two loops with eyelets to the square pattern piece.

    Attach loops with eyelets
  4. Step

    Sew the pieces together and turn through the zipper

    Mark the centres and sew the pieces together as in the first version.

    This time, sew the lining together from the wrong side. Then you can simply turn the bag right side out through the zipper.

    Sew the pieces together and turn through the zipper

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About the author

Sabine

I come from Siegen-Wittgenstein, where I spent my childhood breaking in cows, jumping off haystacks and scraping a D- in needlework class.

Today, being creative feels like indescribable happiness to me – and it grows even more when I can share it with others. Since 2016 I have been celebrating my passion for sewing on this blog, and I love that sewing connects so many people.