Originally Posted by Barb44
Squaring is trimming edges to make a perfect square or rectangle. It can be done to a block or a whole quilt.
Blocking is wetting the quilt top and pinning it to something solid (like a carpet) to the size you want. The fabric will stretch a little when wet, or shrink when it dries. I think you can also use a steam iron to block it, although I have never done it. I always square my puilts if necessary.
Ditto ...
Also, you can do some blocking via ironing ... along with steam or spritzing with water, or spray starch/sizing.
Thus why it's important to "press" up and down and minimize the stretching and shifting of fabrics ..... unless it is wanted/needed.
Then once the pressed/ironed block is dry, you will likely need to do some final squaring and trimming.