Isolate the right size line in Inkscape: the easiest way!

Update: with upcoming Inkscape 1.2 direct saving of PDFs won't work without some tweaking, here is the video with two new ways:    • Inkscape 1.2 Beta: new features for projec...  
Select the size in non-layered sewing pattern, the simplest way! It will work well with Mood patterns and with many others. It will allow you to see the cut line clearly for projector sewing or tracing. I show how to highlight the size line, change line thickness, make it colored and solid, how to save to SVG and how to export to PDF.

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PDFStitcher to assemble print-at-home sized PDF patterns is here: https://www.pdfstitcher.org/
I use Inkscape, a free vector editor for Linux, Windows and Mac
Pattern: free Willow Cardigan by Mood Fabrics
Written instructions
Start with A0 pattern without layers or a pattern stitched together with PDFStitcher. The tutorial will work exactly with Mood patterns since they are very easy to work with.
Open the pattern in Inkscape. Don't change anything in the PDF import dialogue.
Switch from default Select tool to Node tool: press N or use the 2nd icon from the top on the vertical toolbar.
Zoom in (Ctrl scroll), find the line you need in any pattern piece and click it to select. With it selected go to Edit/Select same/Fill and stroke. After that more lines are selected with faint rectangular boxes around them.
To change stroke color: not clicking anything else find a color you like in the bottom panel, hold Shift and click it. This will color the line. If you forget Shift, this will color the space between the lines (fill). Try that too, when it works well it's very comfortable to project and cut.
If you went with lines, they are now colored but still thin and dashed. Go to Object/Fill and stroke to see the Fill and Stroke panel. It may appear in the right like in the video or hover like a dialog window. On the third tab, Stroke style, we need to change Width to about 4px and Dashes to the very top option, Solid.
Now the lines are colored, bold and solid and this is it for bare minimum size selection. A lot more can be done: you can get rid of the numbers and page edges, unfold and mirror pattern pieces, more the size you need to a different layer, create cutting layout to project and cut it directly. I show these things in other videos but wanted to keep this one as simple as possible.
Save your work. You can save directky to PDF and Inkscape would suggest (that's because we started with PDF) it but if you want to be able to return to this pattern and change things, *.svg is way to go. File/Save, Cancel the PDF export window and try again. This time the suggested extension is *.svg, keep it and type something like the size selected in the name.
To make a PDF for projecting, use File/Save as. After you decided on a name and a place, PDF Export dialog appears again. I'll adress all the things that may need tweaking there:
if PDFs saved from Inkscape throw an error in Adobe Reader, use 'convert text to paths'.
Leave resolution at default 100 and measure the control square in Reader after the export. If it measures true, you don't need to mess with it.
If you only colored the lines and haven't pulled any object beyond the page border, you can leave 'Output page size' as is. Otherwise use 'selected objects size'.
Bleed has to be at least 20mm to all the pieces to fit but it's convenient to have it 500mm or more for the scrolling space during projecting.
Press OK and open the resulting file in your PDF Viewer. Don't forget to measure the control square. If it's smaller than it should be, you'd need to increase resolution during export or vice versa. I'll have a separate video for people with non-standard resolutions showing how to easily measure it in one simple step.

More pattern alterations in GIMP:    • GIMP sewing tutorials  

More pattern adjustments in Inkscape:    • Inkscape sewing tutorials  
Pattern modifications in Inkscape and GIMP for projector sewing:    • Projecting prepping  

Projector by Econceptive from the Noun Project
#projectorsewing #opensourcesoftware