My New Love: Stiff Stuff Firm Sew-In Interfacing

Lazies, Let’s talk about our new Sew Lazy brand Stiff Stuff firm sew-in interfacing. Original announcement here. The best way to show you what is so special about Stiff Stuff is to see it in action. So, I’ve experimented with some video, courtesy of my oh-so-smart iPhone.

First up, used in place of batting or fleece, see what it will do for your next bag project. Here I simply scrunch and smoosh a Claire Handbag repeatedly. This particular bag has already had this done hundreds of times during the Sew Lazy debut last month. Watch how it bounces back on its own. It seems rather like an Olympic routine with a delightful dismount at the end. Ta da!

Stiff Stuff (SLG107, 20″, $5.29 yd)
The new love of my bag-making life. Firm, yet flexible sew-in dense interfacing. Similar to, but softer than Timtex/Peltex. It’s forgiving and doesn’t hold the fold like those other guys. You can crumple a bag into a ball and it will bounce right back and stand up straight. Use it in place of fleece or batting in a structured bag. Great for table runners and placemats, too. Name: Stiff Stuff = I need some of that stiff stuff to make my bag stand up.

For years now, I’ve been using fusible fleece (which I still love) to give my bag designs some stand-up-i-tude. Stiff Stuff is an option to use in place of fusible fleece that has more stability. Stiff Stuff is a sew-in product, so it is not ironed or fused to your project fabric. It must be stitched in place.

Claire Handbag (LGD125) made with Stiff Stuff in place of fleece.

Until now, there really haven’t been many product choices for us between the soft structure of fusible fleece and the unbending structure of products like Timtex, which I feel is far too structured for my designs.

Stiff Stuff is an excellent option for placemats and table runners, too.

Stiff Stuff Properties
Here’s a short video showing some of the properties of Stiff Stuff. This is just a small piece of Stiff Stuff cut from the bolt.
– First, I bend a corner, showing its thickness and flexibility.
– Then I hold it on the palm of my had and you can tell that it does have enough stiffness not to fall limp over my hand like other interfacings.
– Next, the big finish! I gather Stiff Stuff and crumple it in my hands and release. It bounces back and can be smoothed flat with my hands. No lasting folds or crunches. Outstanding!

How To Use Stiff Stuff
For all of my bag projects that call for fusible fleece, you can easily substitute Stiff Stuff. Simply cut Stiff Stuff to the size needed and stitch in place around the edges rather than fusing in place.

Here’s a view of this Claire Handbag during construction. The fabrics for the front and back of the bag have been pieced and placed atop a piece of Stiff Stuff. Stiff Stuff does not stretch or distort, so it offers a very nice foundation and structure for our fabric projects. Simply smooth your fabric into place, matching edges all around. Then stitch through fabric and Stiff Stuff very close to the edge, perhaps 1/8″, so this stitching ends up in the seam allowance of the finished project. The Claire Handbag does not require any additional quilting. However, there is some topstitching next to the angled pockets, and it is stitched through the fabric and Stiff Stuff, offering more structure and security. Stiff Stuff can be quilted.

Below is a close-up of stitching around the corner notches, to hold the fabric to the Stiff Stuff during construction. Using Stiff Stuff in place of a fusible is just that easy.

Sew Lazy Interfacing
I introduced Sew Lazy a couple of weeks ago on the blog here: Sew Lazy Interfacing

Click to enlarge bolt end label.

Which Projects to use with Stiff Stuff
Whether the following patterns call for fleece, fusible fleece or batting, you can easily use Stiff Stuff in its place. I am working on a master list of which patterns use which of the Sew Lazy Interfacing products. It’s quite a list and I’m working at making it sensible and easy to use. I’ll keep you posted. In the meantime, here are my bag designs which I recommend using Stiff Stuff with:
– Margo, Candice, Claire, Whimsy, Newport, Towne, City Bag, Veronica, Gracie.
– For Miranda, Mini Miranda (Use in place of fleece/interfacing for cover only. Continue to use interfacing with lining fabrics.)

Stiff Stuff comes in a 20″ width, rather than the traditional 45″ width called for when fleece or batting is listed in for pattern supplies. As a general rule of thumb, simply buy twice the yardage listed on the pattern, and perhaps add 1/4 yard for safe measure. I’ll have more detailed info in coming posts.

Where To Buy
Sew Lazy Interfacing has started shipping to quilt shops. Ask your local quilt shop or online retailer for Sew Lazy.
Sew Thankful has it in stock here.
Quilter’s Warehouse has it in stock here.

What do you think? Do you see a noticeable difference in the stand-up-i-tude of the Claire shown in the video? Ready to give it a try?


Leave a Lazy Comment

26 Responses to “My New Love: Stiff Stuff Firm Sew-In Interfacing”

  1. Wendy Johnson — September 11, 2012 @ 8:08 am

    This looks fantastic, Joan. You are so innovative, and not just with your patterns. I hope it comes to Canada soon.

  2. Terri Martin — September 11, 2012 @ 9:29 am

    I am very interested in making handbags – mainly for myself; but also for my sewing/design studio – soon to come to fruition!

  3. Deborah Jennings — September 11, 2012 @ 9:49 am

    I love this! Now I just have to find it close to home! This stiff stuff looks awesome! I can see lots of different uses for this! Thank you so much for the heads up on this!

  4. Kelly Jackson — September 11, 2012 @ 10:12 am

    Now those are my kind of videos….direct and to the point no messing around! I have got to have some of this Stiff Stuff. The I-Tude of Clair is some nice Tude if I don’t say so myself.

    I had added another product to my Candice Bag and I now think I need another Candice Bag with some Tude!


  5. Susan b — September 11, 2012 @ 1:55 pm

    I’m really looking forward to trying you’re new interfacings. You’re always coming up with the best ideas!!

  6. Jan S — September 11, 2012 @ 3:30 pm

    Just ordered it! Can’t wait to try it!

  7. Harriet — September 11, 2012 @ 9:42 pm

    Thank you, Joan, for the quick vids. There is nothing that can replace actually seeing a product in action if you can’t touch it in person. This looks like amazing stuff and I can see a garage sale in my future to get rid of some of the (sigh) stuff I had been using that wrinkled so badly!

  8. Shellie Fontana — September 12, 2012 @ 8:31 am

    SOLD! GREAT product! Now, I must re-make one of my FAVE totes! Look for my order today!

  9. Shan K. — September 19, 2012 @ 12:48 pm

    Can’twait to try it.

  10. Beth Strand — September 25, 2012 @ 8:20 am

    That looks like and awesome bag and the stiff stuff sounds great! I see more bags in my future!

  11. nellie — September 25, 2012 @ 11:13 am

    forgot to post comment ,this sheet id a dream come ture for us bag or purse makers ,i would like to have win this give-a-way it sure would keep my bag shapes without adding so much batting ,can,t wait to try it myself as im making so many bags for chrismas gifts this year,thank you Joan

  12. Irvalee — September 25, 2012 @ 12:21 pm

    Love using your purse patterns, can’t wait to try your new interfacings in my next purse project.

  13. Anita Cota — September 28, 2012 @ 3:50 pm

    Will Lazy Girl be at the Pacific Internatinal Quilt Festival/and or will one of the venders be selling the new Lazy stiff stuff?

  14. Karen Wetherall — February 9, 2013 @ 5:10 am


    I belong to and regularly contribute articles, mainly on Bags. I have featured Kat Southern’s designs and follow her blog so I heard about your “Stiff Stuff” from her.

    As I am in the UK are there any plans for it to come here anytime soon? I have Kat’s Quattro pattern and she suggests it could be used for that so if I can get some I will try it.


  15. Karen Wetherall — February 9, 2013 @ 6:15 am

    Whoa, update, just bought some stiff stuff from Creative Quilting here in the U.K. Must buckle under and make that bag when in comes!

  16. Kelly Drinkwater — February 12, 2015 @ 8:33 am

    I’m making pet beds that need to stay upright. Will your product do this?

  17. Debbie Nally — February 19, 2015 @ 3:11 pm

    Would you care to share the pattern for this bag I love the look. … thanks

  18. Jayne — April 25, 2015 @ 12:54 pm

    Will this be available anywhere in Canada?

  19. Linda — February 26, 2016 @ 1:20 pm

    Hi Joan, would you know of any Canadian stores selling this? I really like the look!
    Thank you!

  20. Janie — October 20, 2017 @ 4:15 pm

    I love the look of this product ! Can you tell me if it is available in Canada, specifically British Columbia?


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