I worked on a cosmetic type bag this afternoon and had to do some markings on the FF. I had a hard time finding anything that would work.
What suggestions from anyone here ???

What is FF? I mostly use a common lead pencil for my markings. It washes out nicely or can be erased with a fabric eraser.

Fusible Fleece

I use a Chocoliner. It is a chalker that has a little wheel and dispenses the chalk with a fine line. They come in several colors. (pink, blue, yellow and white0 Put you ruler where you want to mark and run the Chocoliner along the ruler. They can be refilled.

Thanks

I love this stuff!

I thought I loved chocoliner BUT last week had used a yellow one and it didn't wash out of my quilt. Soaked overnight in a bath of oxyclean, washed 4 times and still a faint yellow line. Beware.