I am new to this community, but have extensively been researching methods and ideas for foam building. This is one of the best tips I have come across in my whole month of reading endless posts. Thank you so much for posting this. I am just a few days from starting my first build and I don't want my work to end up needing a rework because of seams not joining neatly. Like I said thanks so much and I hope that you have tons more to share for us "noobs" about this new craft.