This looks like a fun project. The idea is from American Woodworker.
To make it more chip carve-able, I was thinking about not drilling the large holes in all the squares and then chip carving those surfaces. That along with the cut off corners would make a really cool piece.
What do you think?
Step-by-step instructions are found here –
-- Marty, https://www.MyChipCarving.com, 866-444-6996