The puzzle pictured is made of 1/8" plywood for the inner box and 1/8" mahogany for the outer faces with ash bricks. The entire box was finished with a coat of clear lacquer.
Brick Block
This looks like a model of an old-fashioned milk churn stand, being layers of bricks topped off with a concrete slab.
There are 24 "bricks", and every one has to be moved, either left, right, up or down to release the lid. Three of the sides are inter-locked with each other, but the last side isn't. The bricks on the last side won't move at all until the other three sides have been unlocked. Even when they're unlocked, it seems the last side is still locked. There is a "twist" to this puzzle box that I haven't used before, revealed in the video, and there are 26 moves to open the box.
The box will take a fair bit of making, as there are about 100 pieces invloved...
The size of this box is 4" square by 4-1/4" tall and is made from 1/8" wood and plywood. If you purchase a kit with hardwood faces you can choose to have the bricks be a different hardwood (Ash, Cherry, Mahogany, Maple or Walnut).
This BH puzzle kit has alignment pegs built into the parts to make assembly easier and virtually every part in the kit is labeled.
Photo Assembly instructions for this kit available soon.