Selective seam allowance application

Is there a way to chose which edges of a pattern get a seam allowance addition?

For example, a square. If I only want to add seam allowance to 3 of the 4 sides, is there a way I can do this? Or should I just draft the whole pattern with seam allowance included?

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Yes, there is! Sorry I don’t have a screenshot for you, (a picture’s worth a thousand words,) but I will attempt to describe it to you.

  • In the “Details” view, right-click the pattern piece you want to work with, click “Options.”
  • Now that you have the options screen up, click on the “Seam Allowance” tab at the top. I assume you already have seam allowances on.
  • Under “Nodes” use the drop-list to choose the first point of the side you want to have a different seam allowance, (you did select the points while making the detail, right?)
  • change the measurement from CurrentSeamAllowance to what you prefer the seam allowance to be in the “After” section.
  • Then choose the ending point of that side of the pattern piece, & in the “Before” section do the same thing.

That should do the trick!

Here’s a .val with the random experimental piece I gave a variable seam allowance: Xpattern.val (4.4 KB)


Here’s a screenshot now, with the key points highlighted with a red circle:

ETA: & now I’ve made a page in the wiki regarding Seam Allowances. I probably ought to go back & delete a few of the less focused paragraphs, but I’d rather someone else make the judgement on what is unwanted.

I’m curious what that “Custom” section is. It wasn’t responding to my attempts to poke at it.