I also use the Golden Thread to quilt my quilts. I have found that using the Crayola washable markers work the best. If anything gets left on the quilt, it will wash out. My latest example.

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I love Crayola Washable Markers....just wish they can in a super super fine point.

I use the blue water soluble markers. No problems because I always wash my quilts when I finish with them.

I just love my Hera marker nothing to do after. I'm too afraid to use markers, to many of my quilts have white background. Just used it on steel grey fabric no problem seeing the marks.

I use the blue water-erase most often, unless it's something where I'm going to need to press it before I can remove the lines, or if it's a color where the blue doesn't show. Then I tend to default to old school tailor's chalk, the kind that comes as a solid square or triangle. Hard to get really fine lines with that stuff, though.

I haven't tried the crayola washable markers - I should give those a shot. I've tried a lot of other things I didn't like for one reason or another, but I haven't tried those yet.

Fastpedal, this quilt is stunning! It looks like an antique.

Hera markers are great for marking. I also use one to make a stitch line when I'm making half-square triangles. So easy to sew them that way.

I don't think there is one single marking tool that works on most things that can be seen by most. I use purple disappearing pen, pencil, chalk markers and tape. I do a lot more freeform quilting just to avoid marking.

Well you have to define temporary. I LOVE the Sewline air erasable pens. Great for immediate stitching.

Wash it! Doesn't need soap.