Stencil dimensions: A6 (14.8 x 10.5 cm)
Thickness: 1 mm
Square dimensions: 2.8 x 2.8 cm

Stencil fits perfectly to a 0.5 cm dot grid pages in bullet journal. Wave pattern on the top and zig zag pattern on the bottom of the stencil can be used to underline something important or for drawing additional shapes on your pages.

I printed mine with PETG, but PLA will work as well. Standard settings in Cura will be okay for printing this. I have lowered number of walls to 1 because it seemed to me that joints will be stronger if I have a top/bottom in that place which is rotated for 90° on each additional layer (instead of printing walls on top of each other).

The stencil itself is flexible enough if you need to bend it a little bit to be able to press it against the page.