Originally Posted by pittsburgpam
Since the left and bottom pieces don't really need to tie into anything else on the outside you could make those strips wider/longer and then square it up to 12 1/2".
Doh! Of course.... if I replace the last strip on each side then it will be 12.5. If I make more I'll just leave a bigger allowance to trim down to the right size.
I'm still very undecided though.... it's the time that's the problem.