I have been looking for one of these for ages. It is a fabric glue pen and takes the tedium out of paper piecing. This one is from Simply Solids and was recommended to me by Gilly from Gilly Makes.
You cut out your hexagons in paper and fabric.
Then apply the glue to the paper pieces. It is a sort of sticky and waxy, soft crayon.
Then fold over the fabric to make your hexagon. The glue is instant and it sticks without holding it down for ages. Then when you have neatly stitched them together you can pull out the papers.
More time on the relaxing stitching bit rather than the boring preparation. More of that I say. Jo x