I iron large unsewn pieces too - I press gently the sewn sections of blocks and blocks and quilt tops.
Originally Posted by
ckcowl
the ironing vs. pressing issue is about Blocks/cut pieces- vs large pieces of whole fabric. you want to (press) constructed blocks/small pieces - especially ones with any bias edges- to keep from distorting/stretching out of shape.
if you are ironing a whole piece of un-cut fabric you iron it- like ironing a shirt-or what ever.