I have directions for a 15" block that uses lots of HST. I want to make it a 12" finished block. Simple proportions would be easy: 12/15 = 4/5= 80%, or reduce the block by 20%. However, since each piece has 1/4" seam allowances, I know there is more math involved.
Math and I stopped being friends in 4th grade.
Can someone please give me either a simple explanation on how to reduce such a block from 15 to 12" or a good link that explains it? One page I checked out did not account for HST.
Thank you to everyone whose brain works differently from mine .
THe block can be seen here:
https://blog.clothworks.com/tag/amer...december-2018/