How to Create a Balanced Dart - Threads

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How to Create a Balanced Dart

A dart that is sewn in heavy or dimensional fabric and pressed to one side can be unattractive and bulky, because you'll have three layers of fabric, one from the garment and two from the dart. These multiple layers may not cause a problem with your new garment, but they will start to shadow through (imprint) on the right side after several washings, dry cleanings, or pressings.

There's no need to cut the dart open to achieve a flat, even effect on both sides of the dart stitching line. Many pattern instructions call for the dart being slit along the length of the fold and pressed open. This involves making a slit in your garment from 10-in. to -12-in. long, which weakens the garment at every double ended dart around the body.

Instead, a balanced dart adds extra fabric to the opposite side of the dart seamline to act as a visual counterbalance. This is also ideal for fabric that ravels easily.

In an unlined garment, the extra fabric to help balance the dart shows and the edges are raw. Cut this extra fabric on the bias, so the edges will not ravel.

  For each dart, cut a bias strip of self-fabric 2-in. wide and 1/2-in. longer than the length of the dart. (I used a contrasting fabric so you can see what is happening easily.)

Fold the garment piece along the center dart in the usual manner.


  Center the length of the fabric strip underneath the garment piece and pin through all thicknesses.

This is the opposite side showing the self-fabric pinned to the dart value.

  Start sewing about 1-in. inside one of the points. Stitch through the point and off onto the bias strip beneath.


  Stitch the remaining section of the dart, by overlapping your stitching, continue to sew to the remaining point and off onto the fabric beneath.

At the ironing board, fold the fabric in half and press away from the dart.


  Cut away the bulk of the strip up to about 1/8-in. to 1/4-in. away from the fold along the entire length of the fold.

  From the wrong side, press the dart in one direction and the layers of the trimmed strip on the opposite direction.


  Press the dart value in one direction and the bias fabric in the dart shape in the opposite direction. This narrow strip is on the bias, and though it is raw edged, it will not ravel. If this narrow strip was serged, the dimension of the serger threads would start to show through to the surface of the garment.

UPDATE: Threads' senior technical editor Judith Neukam has added additional information to help clarify the process.

  1. The bias strip is a single layer under the dart. Stitch through it when you sew the dart.


  2. Fold the bias strip along the stitching line away from the garment.


  3. Open the garment on both sides of the stitching line and press the dart away from the bias strip. You can see that the numbers marking the layers are equal on both sides to balance the dart.
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Comments (9)

Madame_Mooshi Madame_Mooshi writes: Hello all.

I have just found this post and have to say it does appear a little confusing but if you think of it as a seam application then it might be a little clearer to work through. I wonder if the authors would recommend cutting (grading back) the inner most layer of the dart allowance to reduce bulk? This might mean cutting the fold line of the dart though which could weaken it if it's on a straight grain? If this dart was "coutured", the edges could always be catch stitched in place, provided there is sufficient seam allowance. I wouldn't trim a dart if it is narrow.
Posted: 10:43 pm on January 3rd

LOUISE CUTTING LOUISE CUTTING writes: Thank you Judy for adding the step-outs for the balanced dart. As Katielynne sugested, making a sample will help you see exactly what is being sewn, pressed, and trimmed.

Louise Cutting
Posted: 3:40 pm on December 3rd

stitchhappy stitchhappy writes: I've added a different explanation right under the original post. I used vellum and paper because you can see through the vellum. I think that was why the original photos were confusing. See if this makes more sense.
Posted: 5:14 pm on November 30th

Katielynne Katielynne writes: Oops! Pardon my misspelling of your name Louise!
Posted: 4:33 am on November 29th

Katielynne Katielynne writes: Seems clear enough to me. Although I think it must be stressed to take care to always use a pressing cloth and/or press the wrong side only on a garment such as help delay the wear and show-through that is bound to happen over time no matter what you do. Even so, this is a definite improvement over an unbalanced dart to help prolong the inevitable outline that will eventually reveal itself. Thanks for the creative option Lousie!

P.s., maybe folks should try this method on scrap material and play around with it a bit. I think once you get into the process, it will become clear as to what needs to happen.
Posted: 4:31 am on November 29th

Alexandra Alexandra writes: huh? what? don't understand.
Posted: 10:30 am on November 28th

JanAunty JanAunty writes: I have to agree with the previous two posters about the balanced dart information. It seems incomplete and is quite confusing. Would you be able to break the steps down a bit farther and/or give more instruction? Thank you.
Posted: 11:42 am on November 27th

user-2299872 user-2299872 writes: Please put this in video. I've read it through a number of times and am having trouble following it. I seem to get lost at the same point MaryGwyneth did. Thanks.
Posted: 8:49 am on November 27th

MaryGwyneth MaryGwyneth writes: I see the value in using the bias and I followed you up to the last couple pictures then got lost. I'm trying to see how you pressed this. Does it work because it essentially grades the seam from four layers to one? If so, how do you handle a deeper dart which still has four layers for up to 1"?
Posted: 9:01 pm on November 20th

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