I do like the design board idea - - -
I just realized that asking how big you are going to make a 12 inch design board seemed like "can't you read?"
At the time I asked the question, I was just thinking that a 12 inch square design board would be '"skimpy" for a block that finishes at 12 inches square if one also stores the completed blocks on them until further assembly.
Most blocks that "finish" are 12.5 inches square "unfinished" size .
But not all blocks are 12 inches!!
When you use them, do you overlap your pieces, or are they spread out?
Guess it would make sense to make the design boards to accommodate the size of the blocks one is making.
I think I would prefer to have my cut pieces barely touching each other - if at all - or I would just stuff all the pieces in a plastic bag and hope for the best.
I think some people found that batting like Warm and Natural worked the best for the boards they make?
What has worked best for you?