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


Kdiver25

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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

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

Mac mini M1 A2348

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

 

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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

BB7027D0-F59B-4400-9F9E-81B21B1A75A9.png

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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.

M1 IPad Air 10.9/256GB   lpadOS 17.1.1 Apple Pencil (2nd gen).
Affinity Photo 1.10.5 Affinity Design 1.10.5 
Affinity Publisher 2, Affinity Designer 2, Affinity Photo 2 and betas.

Official Online iPad Help documents (multi-lingual) here: https://affinity.https://affinity.help/ 

 

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