Originally Posted by
stitch678
If the longarm frame is large enough, some longarmers can mount a quilt kitty corner on a larger squared backing. When completed, the excess corners of backing are trimmed. Thos pieces can then be reused by sewing to another backing for next time...or in the next quilt top.
This is what I was going to suggest. see this blog post for a picture of the concept
https://quiltingjetgirl.com/2018/08/...-longarm-tips/