Simplify cutwork with Fiber Etch

Threads is touting the use of Fiber Etch to simplify the process of creating cutwork embroidery. A Threads blog post says,

Using synthetic embroidery thread, you can embroider a plant-fiber fabric. Just apply a thin layer of Fiber Etch to the fabric that you want to remove, let it dry, rinse or brush it out, and watch the fibers disappear.

Brilliant! Get all the details from the Threads post.