I first drew up a sketch of how the slots in the front should be laid out, using our knives to determine spacing and length of slot. Then I worked out how to cut and assemble pieces to get the slots
where I wanted.
It turns out for this design you need 18 pieces of wood, all precisely dadoed, planed and jointed or you get ugly gaps. If you squint, you might be able to make out the joints - some are obvious,
some aren't. The rows with three and four slots were the trickiest.
As you can see in the picture above, the steak knife slots at the bottom could have used more spacing from the next row up and the large knives at the top didn't need as much space as I gave them.