Inkscape to a projector file

What projector files need

• ✓Everything on one wide page, A0 landscape or bigger
• ✓Lines two to three times heavier than print lines, including inside groups
• ✓Every size on its own layer, so sewists show only theirs
• ✓A test square and marks to calibrate the projection

By hand, it's a copy with every stroke width raised, exported to one page, but without PDF layers, which projector sewists rely on.

The Sewpress way, from Inkscape

1. 1
   Set up your layers

   Use Layers and Objects to make one top-level layer per size (S, M, L) and shared layers starting with an underscore (_grainlines, _notches, _test). Sublayers are fine.

2. 2
   Export for Sewpress

   Save as Inkscape SVG. Inkscape layers are exactly what Sewpress reads. Inkscape's own PDF export doesn't keep layers as PDF layers, so upload the SVG.

3. 3
   Upload and check

   Since 0.92, Inkscape uses 96 units per inch, the same as Sewpress. Files made in older versions used 90, which reads as 93.75%; Sewpress spots that on the inspection screen.

4. 4
   Build projector files

   Sewpress places your master once and builds a projector file, measuring the test square in each.