in the side. this way the marble can come in right on top of the key, then fall in place between the key and lock.
the lock was much more tricky to cut. it is short, and has the most detail. naturally, there are no pictures of me creating this part, because i was too busy almost loosing a finger on my router table. be careful.
i still have all my digits.
to make the compartment--or where the goodies go--i started with a long block. i intentionally cut this piece longer than i needed so i could have an area to hold on to (or screw down) while using the router to cut 