How to Make a Stringer Shirt or Gym Tank From an Old T-Shirt

Pam Oduor
by Pam Oduor
3 Materials
10 Minutes

Here is a perfect way to deal with all of your old t-shirts: upcycle them into awesome stringer gym tanks! These work for all body types since you custom cut the shirt according to your wants and needs.

So grab a pair of scissors and an old t-shirt, and I'll show you how to make a stringer shirt. We'll cover how to cut a stringer tank and customize it too!

Tools and materials:

  • Old t-shirt
  • Sewing Chalk
  • Scissors
T-shirt to turn into a DIY stringer tank

How to make a stringer tank

1. Mark the bottom of the armholes

Lay the t-shirt on the ground and fold it in half, with the front side up. Place your hand with your pinky on the seam of the sleeve. Mark the shirt right below your thumb using your sewing chalk. 

Marking the new armholes on the t-shirt

2. Mark the top of the armholes

Lay your hand with your pointer finger along the seam of the neckline. Using your chalk, make a mark next to your pinky. 

Drawing a curved line

3. Sketch the armholes

Draw a slightly curved line from the mark at the top of the shirt to the mark on the side. This will be the shape of your armholes.

Marking the new neckline for the stringer tank

4. Mark the neckline

Use the chalk to make the area around the neck that will be cut.

How to cut a stringer shirt

5. How to cut a stringer tank

Take your scissors and cut along the line for the armholes. 

How to cut a stringer tank

Cutting a new neckline for the DIY stringer tank

6. Cut the neckline

Unfold the shirt and lay it flat on the ground. Trace the neckline as deep as you would like it, both on the front and back of the shirt.

Make sure you cut the front and the back separately since your chalk lines are different on both sides.

How to cut a shirt into a stringer

Customizing and adjusting the DIY stringer

7. Customize it

At this point, you can make any adjustments to your shirt that you want. I wanted the arm openings on the back to be deeper, so I cut away some more fabric.

I also wanted the front neckline to be lower, so I cut some more of that as well. You can customize your shirt however you’d like!

Stretching the t-shirt fabric

8. Stretch the fabric

Stretch the fabric around the arm and neck openings to give it a more fun look.

DIY stringer tank

How to make a stringer shirt

How to make a stringer shirt

Wear and enjoy! Once you’re finished, pop that shirt on and head out to get some exercise!

I hope you liked this tutorial on how to make your own gym stringer tank. Please let me know what you think in the comments below!

Suggested materials:
  • Old t-shirt
  • Sewing chalk
  • Scissors

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