Sewing with milk cartons: How cool TetraLeather is!

Sewing with milk cartons: Who would have thought that you could repurpose empty TetraPaks for sewing! I’ll show you how it’s done!

Cool, cooler, TetraLeather!

What a brilliant upcycling idea: TetraPaks can be turned into sewable vegan leather in no time! And completely free of charge! The new fabric my sewing dreams are made of is really sturdy. So it's also great for bags and pouches.

And not only that! It’s also wonderful to sew with. With really strong seams!

Now that's what I call sustainable sewing! :)

What do I need to keep in mind when working with TetraPaks?

It is important that you wash out the cartons well and let them dry before processing them.

How can I turn milk cartons into sewable material?

As soon as the milk cartons are clean and dry, they are cut open at the top and bottom. I prefer to do this with electric scissors^*, because it’s otherwise a bit of an effort... :)

Next, the carton is also cut open on one side.

Now the top paper/plastic layer can be peeled off.

The remaining paper/cardboard layer is great for painting. You can use watercolors or wax crayons for this. I use acrylic paints because that gives the whole thing

1. a classy touch and looks great
2. makes the bag more resistant to moisture and water-repellent.

Let the paint dry well.

You can now combine several TetraPaks to make a larger piece of "TetraLeather." This allows you to tackle larger sewing projects, too.

I like to use decorative or zigzag stitches for this and overlap the pieces of TetraLeather by 3 - 4 mm.

What do you need to look out for when sewing with milk cartons?

TetraLeather is a durable material from which many beautiful things can be sewn.

It is best to cut TetraLeather with a rotary cutter or paper scissors. Please do not cut the milk carton with your good fabric scissors. Or, if you do, it's better not to tell me. ;)

When several layers lie on top of one another, it can be a challenge for your sewing machine. Try to fold the seam allowances apart so that the seams lie as flat as possible. The seam allowances then sit to the left and right of the seam so that the seams can lie exactly on top of each other.

When sewing bags, remember to plan for a large enough turning opening. The TetraLeather gets a little wrinkled from turning, very similar to SnapPap or TexiPap (just much cheaper!). :)

When sewing, I use a stitch length of 2.5 - 3 millimeters, and 4 mm for topstitching.

To topstitch the zipper, I first fold the seam allowance neatly away from the zipper. That works particularly well with TetraLeather.

Which needle can I use to sew milk cartons?

I sew with an 80 size titanium needle. These are currently my favorite needles^* because they stay sharp for an incredibly long time. I discovered them at the same time as titanium blades for the rotary cutterr^*.

But you can also easily use an 80 size universal^*!

Sewing with milk cartons: Which project is suitable?

Large and small bags are a great way to use your homemade vegan TetraLeather.

Actually, you can use your vegan TetraLeather for anything you would use SnapPap or cork fabric for! For example, for beautiful lanterns or organizers.

To start, you can try my quick 15-minute bag. It’s sewn in a flash. And it offers a nice surface that you can then decorate with acrylic markers^*!

If you sew several cartons together, you can also conjure up incredibly beautiful Japanese rice bags!

You can also use the homemade TetraLeather instead of faux leather for backpacks or cosmetic bags like my Alsterprinzessin! Give it a try!

This is what the finished bag made from milk cartons looks like

I especially like the texture of the bag. Especially in combination with the gold-shimmering surface. Hm, I’m in love! :)

Sewing an Easter basket out of TetraPak

I gave a small organizer made of milk cartons two bunny ears. And then placed a hyacinth inside. So nice and Easter-y!

You can also use TetraLeather to perfectly implement my tutorial for beautiful, simple Easter baskets with handles!

So then: Let's get started with collecting TetraPaks!

I wish you lots of fun sewing and experimenting.

If you like, feel free to tell me about your experiences with TetraLeather in the comments!

Happy simple sewing,

your Sabine

Frequently asked questions answered