Affinity Designer 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 duplicate with heavier strokes everywhere, on one large artboard, exported with layers.

The Sewpress way, from Affinity Designer

1. 1
   Set up your layers

   Make one top-level layer per size (S, M, L) and shared layers starting with an underscore (_grainlines, _notches, _test) in the Layers panel.

2. 2
   Export for Sewpress

   Export SVG: each top-level layer becomes a named group, which Sewpress reads as a layer. Upload it, and check the layer list and test square on the inspection screen.

3. 3
   Upload and check

   SVG export settings vary between versions. If the inspection screen says your test square reads 75 mm, the file was written at 72 units per inch: choose 72 there and it's fixed.

4. 4
   Build projector files

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