Since releasing my free sewing pattern for the Flexi Coin Pouch, I’ve received many emails and DMs asking if I could show you how to make a pattern for different flex frame sizes.
Whether you’re looking to make a larger pouch for storing glasses or a smaller version for holding trinkets, these steps will show you how to draft a pattern from scratch that fits your flex frame perfectly.
What is a Flex Frame Closure?
A flex frame is a type of hardware commonly used in sewing to create a structured, snap-open closure. It’s popular in small pouches, bags, wallets, and coin purses—basically, any project where you want a quick, secure way to access your contents without the fuss of zippers. Flex frames are easy to use and bring a polished finish to your handmade projects.
Because they come in various sizes, learning how to create a custom pattern for your chosen flex frame opens up endless possibilities.
In this close-up, you can see the flex frame with a small pin that comes with most closures like this. This pin is crucial for securing the frame’s open end, so keep it safe. If the pin is lost, the closure won’t function properly, and your pouch won’t open and close as it should.
Note: I got my 8.5 cm (3 3/8”) flex frame from here. They come in a range of sizes, so you can choose the one that best fits your project.
How to Create a Custom Pouch Pattern
What You’ll Need to Start
Before we get into the steps, here’s what you’ll need to draft your custom sewing pattern:
- Flex frame closure in your desired size
- Pattern paper or any large sheet for drafting
- Pencil and eraser
- A straight edge or quilting ruler for accuracy
- Paper scissors
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Step 1: Measure Your Flex Frame
To make a pattern that fits your flex frame perfectly, you’ll need to take a couple of measurements.
Width: Measure the width of the flex frame, but exclude the hinges. (Unless you’re specifically adding a gathering as a unique design detail.) The hinges are outside and do not fit inside the fabric tunnels.
For reference, I am using an 8.5 cm (3 3/8″) flex frame – the width of my tunnel will be 8 cm (3 1/8″).
Height: Measure the height of the flex frame, but make sure to add a bit of ease—around 5 mm (1/4″) should be enough. This added ease allows room for the fabric to fold properly and accounts for the small flap along the open hinge.
If you don’t add ease, you may have difficulty inserting your flex frame closure into your finished project.
My flex frame is 1.5 cm (5/8″), so I will make the tunnels about 2 cm (3/4″) tall.
Step 2: Drafting the Top Trim (Tunnel)
Next, we’ll draft the top trim that will hold the flex frame in place.
Draw a rectangle using the measurements from step 1. The width should be the exact width of your flex frame, and the height should be twice that of your flex frame (with the added ease). This is because the fabric needs to fold over the frame to form a tunnel.
Now, add a 1 cm (3/8″) seam allowance around all sides of the rectangle to allow for sewing.
Step 3: Drafting the Front and Back Panels
Decide on the height of your pouch or bag. This will depend on the type of project you’re creating (whether it’s a small pouch, wallet, or larger bag).
For example, if you’re making a glasses case, ensure the pouch is long enough to hold your glasses.
Draw the main panel using the width of your flex frame for the top edge. You can choose any shape—rectangle, square, triangle, or rounded, depending on your vision for the project.
Important: The top edge must be straight.
Optional: Add a small amount of ease to the width for easier sewing. I typically add 5 mm to 1 cm (1/4″ – 3/8″) of ease.
My rectangle measures 9 cm (3 5/8″) wide (8.5 cm (3 3/8″) for the frame + 5 mm (1/4″) of ease) by 16 cm (6 1/4″) tall.
Don’t forget to add a 1 cm (3/8″) seam allowance around all sides.
Step 4: Optional Lining Adjustments
Depending on the size of your project, the fabric you’re using, and your preferences, you might want to create slightly smaller lining pieces.
To create a separate pattern for the lining, start by drawing your main panel pattern once again.
Keep the top edge the same width as the main panel, but feel free to make the lining slightly shorter and/or narrower at the bottom (red lines). Once you’ve made these adjustments, erase the previous lines and add a 1 cm (3/8″) seam allowance around the amended pattern.
This adjustment will prevent the lining from looking saggy or loose inside your finished project, giving your pouch a more polished and professional finish.
Step 5: Finalise Your Pattern
Now that your pattern pieces are drafted, it’s time to annotate them.
- Start by adding a grainline to each piece so you know in which direction to cut your fabric.
- Label your pattern pieces clearly so you know exactly what they are for future reference. For example, I like to call them “Top trim” and “Main panel” (or “Front/Back”). It’s also a good idea to mark the midpoints on your pieces to help you align everything correctly while sewing.
- I also like to name my pattern to keep things organised. Since I’m making a pouch for my glasses, I’ve called this pattern “Glasses Pouch” — not the most original name. Still, clarity is vital when organising patterns for different projects!
Tips for Customising Your Pouch
Customising your pouch allows you to add your own unique touch. Not only can you adjust the shape and size, but you can also play with details like texture, colour, and functionality.
Here are some of my favourite ideas, with tips to get you started:
Add style lines for a colour-blocking effect
Style lines are a simple way to elevate your design. By dividing your main panel into smaller sections, you can use different fabric colours or prints for a bold, eye-catching look. This technique works particularly well if you want to use up scraps or create a modern, geometric design.
Experiment with decorative pleats or gathers
Pleats or gathers can add depth and texture to your pouch. For example, add gathers along the bottom for a soft, feminine touch or use sharp pleats for a more structured, tailored look. Both options can transform your pouch into something extra special.
Incorporate pockets for added functionality
Pockets are not only practical but also a great design feature. You can add slip pockets on the front or back for quick access to cards or notes or even sew a zippered pocket to secure small valuables. A pouch with pockets is always a win!
Let your creativity shine with appliqué or embroidery
Sew on a fun motif, initials, or even a cute phrase that reflects your personality. These details add a charming, handmade feel that’s perfect for gifting or personal use.
Attach straps or connectors for versatility
Adding a strap or connector can make your pouch even more practical. You could attach a wrist strap for easy carrying or add a connector with a clip to hook it to your bag or belt loop. It’s an excellent way to customise your pouch for on-the-go use.
Use different fabrics, textures, or prints
Fabric choice can completely change the look and feel of your pouch. Try soft cotton for a casual vibe, faux leather for a polished look, or experiment with textured materials like canvas or quilted fabrics. Mixing prints or textures can also add a unique touch.
The possibilities are endless, so don’t be afraid to get creative and turn your pouch into something unique!
Watch the Step-by-Step Process on YouTube
If you’re inspired to create your own custom pattern for a flex frame pouch but need a bit more guidance, I’ve got you covered!
Recently, I hosted a live session on my YouTube channel where I walked through the entire process of designing a custom pattern from scratch.
In this video, I break everything down, showing you how to measure your flex frame, draft the pieces, and even add personal touches to your design.
Whether you’re a beginner or looking to sharpen your drafting skills, this tutorial is packed with tips and techniques to help you create a pattern that’s just the right size and style for your project.
You can watch the live replay here ⬇️
Try the Flexi Coin Pouch Pattern—It’s Free!
If you’ve never worked with a flex frame before, this is the perfect opportunity to give it a go! The Flexi Coin Pouch pattern is a beginner-friendly project incorporating flex frame closure. It’s a fun and easy way to try out this type of hardware without feeling overwhelmed, and you’ll end up with a cute, practical pouch to keep your coins or small essentials.
The best part? The pattern is completely free! You can download it from my website and start sewing today. Plus, I’ve included a step-by-step video tutorial to guide you through every part of the process, from adding the flex frame to finishing the pouch.
Where to get the pattern?
The Flexi Coin Pouch pattern is available in my shop!
To get it, click the DONATE button to add it to your cart and complete the transaction as usual.
P.S. Donations are completely optional! I greatly appreciate any contributions, as they help me continue creating more free patterns like this for you. 💛
Flex frame closures are a fantastic way to elevate your sewing projects, and now you can create a pattern to fit any size! Whether you’re making a simple pouch or an intricate bag, this tutorial will help you achieve a perfect fit every time.
Have fun experimenting with your designs, and don’t forget to share your creations with me on social media! I’d love to see what you make.
Stay crafty!
