Several years ago, I was participating in a BOM offered by the guild. The first month contained yardage amounts and cutting instructions needed for the whole project.
We were told to wait to cut, but several members were industrious and cut everything right away.
2 months further into the project, I bought 250 beautiful light gray squares, perfectly cut on a machine, from one of those ladies.
The squares were all 1/2 inch smaller than what we needed for the BOM.