Width, depth, height. The finger joints are worked out for you, side by side, from the thickness of your material. No CAD, and no account to look around.
The preview is free. Downloading the file asks for a free account: one e-mail, no card.
The fingers and their slots are worked out from the thickness you typed, side by side. You draw no teeth: the panels come off the laser and push together.
You can give the sizes of the space inside instead of the outside: the material is added all around, so what you need to fit really fits.
The dividers cross each other like the ribs of a fruit crate and stop under the lid. The compartments come out all the same size.
You type width, depth and height, and say how thick the plywood or acrylic on your bed is. From there the six panels are worked out and the overlap at each corner is split into fingers and slots: that alternation is what holds the box together with no screws and almost no glue.
Few and wide on a small box, many and narrow on a big one. The slider changes them while you watch: narrower than the material and they will not hold, enormous and the box looks like a packing crate.
A small clearance is left so the panels push in by hand without a mallet. If your laser burns wider than usual, open the project in the full editor and set the kerf: the fingers adapt by themselves.
The preview is open to everyone. Downloading the file asks for a free account, which also keeps your projects online so you can come back to them.
