If the original center is 6 inches and you want to go to 9, then divide 9 by 6 which is 1.5. Multiply all your other measurements by 1.5 to get your new block size....12 x 1.5 = 18". Do the same for all the cutting measurements.
This is the 18" measurements per my entering the block in EQ with a 9" finished center in EQ. What I actually did was to draw the block as a 12 inch which is the original size. I then upsized the block by the 1.5 to be 18". Then I printed the 18" block cutting instructions to a PDF file. Hope this helps you out.
Last edited by Barb in Louisiana; 03-22-2015 at 03:49 PM.