Here’s where the magic happens. After all the milling and ripping and glueing and re-sawing, we finally get to see if we can really match the lines all around the box. Sure we can. After planing each piece to thickness and ensuring the ends are square, open them up in a book-match. Draw a chalk line at the approximate width of each of the boxes’ ends from opposite ends (this is just to identify the parts). The pictures below explain it better than I can in words. I like to label each piece clockwise A, B, C, D, so when the sides and ends are tilted up the letters are also right side up.
Now all you have to do is cut the same width from opposite ends of each piece. These will become the ends of the box. Don’t make any more than these two cuts. This is where a thin kerf blade will help with the final result. Rotate each of the sides and stand them up and viola! Notice that the wood grain also lines up. Next time we’ll cut the corners and the box takes shape.
-- tim hill www.newcalshop.com