Originally Posted by JustAbitCrazy

The center dresden plate has sixteen blades, so they are 22.5 degrees each (360 degrees is a full circle, divided by sixteen is 22.5 degrees each). You can make your own templates for the blades since you know that size. You probably know the size of the entire center block, right? So you can look at the photo and judge how long to make the blades/how large to make the center dresden plate.

Now for the outer ring: It's made of end chunks of blades which look wider than those in the center dresden plate, and we don't know the diameter of the ring. If I were you, I'd draw a paper mock up of that center dresden plate, then experiment with end chunks of wider paper blades until I got an outer ring that was pleasing. Then those paper blades are your pattern, which you can use to make a more durable template out of plastic.