Well quilters, after reading this yesterday thought don't need one. This morning decided I did as a quilt I was sewing the seams would be better open and I hate burnt fingers or melted finger nails. So look what I did .
Photo one the cardboard tube thick one , and a towel.
Photo two I could fit two blocks on, one nearly pressed one waiting.
Photo three showing the seam finished.
It did work and the cost ," brain ache"