The Jacob's Ladder quilt block is a variation of a 9-patch quilting block. It's a combination of 4 half square triangle units and 5 four patch units. Line them all up correctly and you get a diagonal ...

I didn't start using the dynamic block feature, introduced in AutoCAD 2006, in earnest until around 2012. Until then, my honest take was that while the feature existed, I didn't know how to use it, ...