What is flax filament called?

Answer 1

It is a thread. Flax is a material similar to cotton, so the fiber is spun into thread in a similar fashion. Flax thread is most commonly used for embroidery purposes, as it is limited in production, but is almost irridescent when used as embroidery floss.

The filament itself is called a harl.

Answer 2

Flax filament is commonly referred to as flax fiber. It is a natural fiber extracted from the stem of the flax plant and is commonly used in textiles, such as linen, as well as in composite materials for applications like paper and plastics.

Answer 3

If you are referring to the crossword puzzle hint, the answer is harl.