I press open most times. I use this. https://www.fatquartershop.com/12-in...we-and-me-wool To keep seams from flipping I use a flat bridge that takes the lip away from where the plate and machine body meet. A piece of masking tapes works.

I press both ways, according to what makes sense to me. For instance, in this kaleidoscope block (of which I made 49), the individual wedges were strip pieced and it was much easier to join them together if the seams could be nested. Then I pressed the joining seams open, because it helped me with the bulk at the center.

Having choices is one of the best things about quilting.

Daffy

P.S. The block is an extra and is quilted because I was trying to decide on threads.

I'm a press to the dark side! May the force be with me! :cool: