Most of the Japanese toolchests I make follow the pattern established by Toshio Odate, which makes them very traditional, but very modern.
So what were Japanese toolchests like in the medieval period? Similar in some ways, but a lot less sophisticated.
In this fourteenth century illustrated scroll, two apprentices take a break from working on the construction site of a new temple. One leans against a tool chest that is open, showing some tools inside. We can estimate that this chest is about 3 feet long, about 1 foot wide, and six or seven inches deep. The end handles and clever locking mechanism are missing, but the cross battens keep the lid from falling in. The wood seems very thin, represented by a single line whereas the battens are shown with rectangular ends. No joinery or fasteners are visible, which makes them something of a mystery. Butt joinery is used on the modern chest, so we can assume it was used here, too. No edge to the bottom of the box is visible, so the bottom piece is most likely fully captive. Nails are used on the modern chest, so it’s likely they are used here, though they may be wooden nails or pegs.
Here is my interpretation of the fourteenth century toolchest:
I ran a 6-foot 1×8 and a 6-foot 1×12 through the planer to shave it down to a half-inch thick. I cut the bottom, lid, and two ends from the wide wood. I cut the sides and battens from the “narrow” wood, ripping the 7.25″ width into 2″ battens. Then, I nailed it all together.
I deadened the nails for the lid, so it should hold together pretty well. The whole thing is 29 inches long, which was about the biggest chest I could make from the two boards with which I started.
What did I learn? My chest isn’t long enough, and it’s possibly too deep. The proportions just don’t look right. My battens should be made from thicker wood, and should be both narrower and closer to the ends of the lid. Because I used thinner wood, this chest is a lot lighter than a previous attempt. Very little wood is wasted, unless you count the one third of the lumber that got turned into shavings.