I love designing block-based quilts, and I love it even more if I can design a block with borders that aren’t visible. In other words, you can’t easily tell where one block ends and the next one begins. That sort of ‘borderlessness’ usually requires colour / fabric to provide a bridge between blocks. I was happy with how Northern Lights (which I renamed ‘Cloudburst’ for QuiltCon submission) achieved that, but I’m still try to recreate the effect.

This week’s two-colour design uses a single block repeated 16 times. They’re all coloured in exactly the same way, but every second one faces the opposite direction (i.e. rotated 180 degrees from the ones next to it).

The design ends up looking a bit like a DNA helix on an angle, with the positive and negative spaces taking on a similar form.

Using different colours for the blocks helps to show the borders between them.

Like Northern Lights / Cloudburst, this design would probably be easiest to make into a quilt using paper piecing to get the accuracy needed.