I thought I was smart in using tailor’s chalk. Think again, the blue can stain. I’m in the middle of quilting the Amish 9 bar and got to the light colored violet where I couldn’t see the soap stone. I tried the blue tailor’s chalk, which showed up great, but now that I’ve quilted the one bar, found it difficult to remove the stain. I tried to brush it off like usual, but it wouldn't. Then took a sponge a corner, then mild detergent. I ended up using simple green on a swatch and it did a pretty good job, but I can still see it if I look really close enough. I’m hopeful a good wash will take the stain away completely, but it's a lesson learned the hard way I fear.
TEST YOUR MARKERS ON FABRIC FIRST!
I should have known better as many times as I got that piece of advice in each and every book.
Now if I could just find something to mark the other pale bar with I’d be half way happy.