Help creating a seam allowance/exact copy of an outline but smaller and inset

[Kdiver25]

Hi hi, I wonder if anyone can help. I am using affinity to adjust sewing patterns for projector sewing. In order to do this I need to know where the seam lines are. I currently have a file with the outline of a pattern and need to drawn the seam allowance say 1cm all the way around the inside of this outline. Is there a function that will easily allow this? All the examples I have seen are about expanding the shape to add onto the outside? Thanks

[NotMyFault]

can you provide an example document, and a mock-up where the lines should go?

[sfriedberg]

@Kdiver25The answer to your question is "Use the contour tool in Designer".  You can generate contour lines inside, outside, or both inside and outside your original curve.

[Brian_J]

One possible option is to apply a 1cm inner stroke to the outline shape, then expand the stroke. After expanding the stroke, with the Node Tool, delete the outer path of the stroke and you’ll be left with a single path 1cm from the outline shape.

Inner Stroke

[Brian_J]

2 minutes ago, Brian_J said:

One possible option is to apply a 1cm inner stroke

I forgot how the Contour Tool works. Using the Contour Tool like sfriedberg suggested is an easier option. 

[Kdiver25]

Thanks for the replies,

 

@sfriedberg with the contour tool, I can drag it in to get it to go inside my original shape and then change the radius to my measurement say -0.5inch but then I bake and the original shape disappears, do I just duplicate before doing the contour?  Thanks

[DM1]

2 hours ago, Kdiver25 said:

do I just duplicate before doing the contour?

Yes, that will work. You can also alter contour line to a dashed line, different colour to make it more obvious.