https://answers.sulky.com/3915569/What-did-you-use-to-roll-the-seams
What did you use to roll the seams? (Education & Events Videocasts Sallie Tomato's Casey Duffle)
The seam roller can be found at https://sulky.com/i-sew-for-fun-roll-press
education eventssallie tomatouserollseams