Originally Posted by ckcowl

you square your top by making sure your edges are straight- sides and top/bottom===the quilt is generally trimmed/squared after quilting- but needs to be straight for long-arm quilting so when it is loaded on the rollers it rolls up straight- otherwise it will (feed) crooked and you could run out of batting/backing--generally if you trim/ keep things straight as you create your top- it will be straight enough for quilting...