I have been using a soap stone for dark fabrics. The kind machinist use for marking metal .

I have used 'chips' of soap to mark on dark fabrics. It works very well & usually brushes right off. The best part is that you know it will wash off! :lol:

For pen marks that keep coming back, hydrogen peroxide will get them out permanently without damaging your material.

hydrogen peroxide is also good for removing blood spots!

(Something I learned from our veterinarian! Don't ask!)

I found that the best marking pencil on dark fabrics is Miracle Chalk. They have a pounce pad for the stencils, but also have a wonderful "crayon" and then the "tailor's chalk" shaped ones. They come out with a puff from the steam iron and they definately stay in through handling. (the crayon and tailor's chalk better than the pounce) I hae the same issue with no bar soap in the house and I never get to go anywhere to stay at a hotel. :D

I recently purchased General's pastel chalk pencils. They work great on all fabrics and have a pencil sharpener inside the box. I also use the wash out blue markers sold at Walmart (Mark B Gone). They last longer than other brands. I did have a problem with some marks not coming out of my last quilt, but I will try soaking it again in the washer. I will also try soap slivers. Sounds like a great idea.
Does anyone else find it hard to hand quilt through fusible batting?

We have every kind of soap available in this house! We must be old school, yo! We still use bar soap, too! I love DOVE! and Olay! we have shower gel, body wash, and you name it! If it makes bubbles and smells good...you'll find it here.
Another good "soap sliver" use is to throw it in the washing machine if you're outta the good stuff! LOL!

Yes, I have a machine but I love to hand quilt ....and I too find it hard with some of the fusable webbing. Glad I am not alone>
Jean