I use Sakura Micron pens 05. I also use a HOT iron to set the ink on the label. The gel pens are the ones that smear the most.
I also use Sakura Pigma Micron pens, in various sizes. However, Sakura's website says: "not recommended for fabrics intended to be washed" and advises to test them first. I haven't had any problems, though. It may depend on how the piece is washed??
I only use the black Micron Pigma, and set with a hot iron.Your little churn dash blocks are sweet, and I love the look of your Cheri P. sampler.
Love those little Churn Dash blocks!
It's hard to beat mini Churn Dash blocks. I use the Micron Pigma and like Janet--I set it with a hot iron
I too use black Micron Pigma pens and set the ink with a hot iron. Then I wash it in the kitchen sink with a little Ivory liquid and warm water to be sure it won't fade or run and ruin my quilt. I blow it dry with the hair dryer, and iron it again. I've never had a problem with this method. Do Not use Sharpie pens; they will ruin your quilt! (Voice of Experience!) ---"Love"