(assuming 1/4 inch seams and pieces are cut accurately)
A basic formula
Finished size plus 2 inches
Divide that number by 3
Example:
In the attached example, I would end up with a 4 inch finished unit.
I cut each of my squares at 2 inches (2 x 3 = 6)
I "lost" 2 inches to seam allowances
I would cut the squares 4 inches to get a 10 inch finished unit
I would cut squares 4-2/3 inches to get a 12 inch finished unit
Last edited by bearisgray; 06-23-2014 at 07:35 AM.