The order
Width0
Depth0
Height0
Seat0
Shelves0
Frame0
The offspring

It may move your own sizes by a tenth to get there — twenty millimetres on something you have not built yet is nothing, and it can be the difference between a chair and a bin bag.

Width0
Depth0
Height0

Sheet 2440 × 1220
Board
Thickness 18 mm
Cutter 3 mm
Slot fit 18.2 mm

How it reads
  1. The order is nested first, so you get the piece you asked for.
  2. What is left is kept as whole rectangles — including the space under a low part, which is where most of a sheet hides.
  3. Whatever comes next is nested into those holes only. Nothing is ever cut from fresh board for it, and it hands its own windows on to the piece after that.
  4. With the grain minded, a load-bearing panel may not be turned a quarter; a rail may. It is the rule that stops the tool giving away a chair that would fold up.
  5. Nothing is screwed and nothing is glued. Two boards that meet each get a slot half way in and slide together — the paper Christmas tree. Both stay rectangles, so it costs cut length and no board at all. A shelf therefore runs the full width, slot to slot, and the back drops in from above and locks the rest.
  6. A side does not have to be a whole board. Open it up and what falls out is not a hole but a rectangle, and it goes straight into the stock the offspring is cut from. Cutting out your legs is sawing your next shelf.
  7. Click a part on the sheet and it is left out; the board it took is free on the spot. Click the empty space, or press Delete, to put everything back.
  8. What the cutter ate is counted, in litres and in kilos, because it is the only thing here that really disappears.