Monday, October 2, 2017

Rotating darts out, creating a smooth curve

For the skirt of my dress I wanted an A-line. This means that the dart is rotated so that  the side seam will be wider. The picture below shows the bottom part of my sloper. When the dart is cut and the dotted line below you can fold the dart lines together, creating the A-line shape.



There is one disadvantage though when you have a large difference in your hip/waist measurements. The dart on the sloper is wide, which makes for a rather steep angle when you fold the dart out. Making it to a nice curve will shorten the waistline quite a bit.

The solution is using two darts. On top is the original sloper as above, below the same part of the sloper, but the darts are changed in two smaller darts.



After the darts are rotated out, the curve of the one with two darts is much smoother. Below I’ve added a red line indicating the one-dart version.


Removing or adding darts is always a design decision and (for me at least) there’s no right or wrong. There will be other ways to do it but this is how I do it.

The dress is coming along nicely. hope to show results soon.


  1. This comment has been removed by the author.

  2. This is just fantastic. I am gonna use this one day. Thanks for showing this technique.

  3. I used it quite often in the Modevakschool but there is only one problem. You need more fabric when you do not want darts. And with some prints it can become strange as you have to watch the recht van draad (what is that in English?) (stripes and diamonds can give difficulties).

  4. I was going to suggest making it into two darts, but that's exactly what you did. I like dividing, rotating and rearranging darts. It's such an easy way to change a pattern. I have an old Taunton Press book on sewing pants that shows doing this in pants to get a palazzo or wide leg pant.