Chaco Liner 藍色粉線筆 by Clover

Finally, a fabric marker that doesn't skip or leave blobby lines—the thin, clear blue lines on my quilt blocks have been a game-changer for accuracy.

I’ve been using this chalk liner for marking seam allowances on dark fabrics, and the fine blue line shows up perfectly without smudging. The refill cartridge clicks in easily, so there’s no mess or wasted time. It’s become my go‑to tool for any project that needs precise cutting guides.

The tip glides smoothly over cotton and denim without snagging, and the chalk stays put until I press it with the iron. I’ve used it on three quilt tops now and the lines are still crisp every time.