- ↔Arrows resize: drag one the way it points
- Square moves what is selected
- Click selects; click a wall to set its own height
- Double-click splits a compartment (with Shift, the other way) or adds a divider
- Drag anywhere else to turn the box · Ctrl + wheel zooms
Floors, lanes and compartments
The box is a stack of trays. Pick a floor to edit it. A floor is split into rows from front to back, and each row into lanes holding either cards with dividers or open compartments. A row's lanes can run front to back or be turned 90°. A compartment can be split again, front to back or side by side, and any inner wall can be given its own height. Card counts and names are examples to replace with your own.
Real-size templates print every piece at actual size. A piece that does not fit on one sheet continues across several, to tape together. Most printers cannot print to the paper's edge, so each sheet keeps a narrow unprinted border with a frame to trim or overlap; set it to 0 only with borderless printing. The first page is a guide to joining the sheets and building the box.
Print at 100% (actual size), with fit-to-page turned off. The 50 mm ruler at the foot of each sheet lets you check the scale. The divider design is changed in the settings panel.