Description
Sure Fuse Firm Cotton Woven Fusible Interfacing 150gsm
Sure Fuse Firm is a 100% cotton woven fusible interfacing designed to add extra body, stability and structure to your sewing projects while still maintaining a beautiful fabric feel without excessive bulk.
It works beautifully with quilting cotton, cotton canvas, bag exteriors and many other sewing fabrics, making it a fantastic choice for structured bag making projects.
At 150gsm, Sure Fuse Firm is heavier and firmer than Sure Fuse Medium, G700 and SF101 interfacing, making it ideal when you want a firmer more structured finished result.
Perfect for Structured Bag Making Projects
Sure Fuse Firm is beautiful to work with when making:
- Structured handbags and totes
- Bag exteriors
- Bag bases and panels
- Structured crossbody bags
- Wallets and purses
- Structured quilting cotton bags
- Home décor sewing projects
Because it is woven, it handles and presses more naturally than many heavier non-woven stabilisers while still providing the structure and support needed for more structured bags.
How to Apply Sure Fuse Woven Fusible Interfacing
Sure Fuse Firm is easy to apply and creates a strong bond when pressed correctly.
As a professional bag maker, this is the same interfacing I personally use when I want extra structure and stability in my projects.
Using a Heat Press
I recommend using a cotton heat setting (approximately 180°C) and pressing for around 15 seconds.
Using an Iron
Use a cotton heat setting and press each section for approximately 15 seconds to allow the adhesive to properly bond to the fabric.
TIP: Press and hold the iron in place rather than moving it around like traditional ironing.
Pressing means lifting the iron, placing it onto the section being fused, holding it in place for approximately 15 seconds, then lifting and moving to the next section.
Important Testing Recommendation
Always do a test press using a scrap piece of the fabric or material you plan to use before applying interfacing to your final project.
This allows you to test the heat and pressing time to achieve the best possible results for your chosen fabric.
Applying to Vinyl Faux Leather and Specialty Fabrics
When applying interfacing to vinyl faux leather, leather or specialty fabrics, place the material with the wrong side facing up and position the interfacing adhesive side down on top.
This allows the heat source to be closest to the interfacing adhesive, helping it fuse more effectively and evenly.
Sure Fuse Medium vs Sure Fuse Firm
Choosing between Sure Fuse Medium and Sure Fuse Firm depends on the type of structure you want your finished project to have.
Best for projects where you want:
- A softer more flexible feel
- Everyday bags and accessories
- Reduced bulk
- Beautiful structure while still maintaining movement
Best for projects where you want:
- Extra body and stability
- More structured bag shapes
- Firmer bag panels and bases
- A more structured finished result












Thick but not hard to work with
Great price
Looking forward to using this product
Perfect for my projects
Give nice structure to bags.
A new product for me to try
Excellent
My favourite interfacing