A simple cutlist optimizer with configurable options designed for working with rough lumber. It outputs a SVG file which can be further edited if required.
Begin by installing local nodejs dependencies.
npm install .
This uses the excellent Packing Solver (https://github.com/fontanf/packingsolver) to lay out cuts. This is a highly performent 2D Guillotine Cut optimizer implemented in C++.
Before running cutlayout the solver must be built locally.
brew install bazel
cd vendor/packingsolver
bazel build -- //...
cutlayout expects a directory containing three files:
- stock.csv - The raw stock we're cutting up
- boards.csv - The output boards we want to produce
- config.json - Configuration
and is invoked as:
npm run cutlist path/to/input/folder -o output.svg
Each option in config.json can be overwritten with a command line flag with the same name.
This file contains the raw stock to cut up. It allows information about end-defects to be included; this is just a bit easier than trying to remember if you did or did not subtract a particular end.
All units are in inches
width, height, title, top_defect, bottom_defect
9.5, 76, "Cherry #1", 0, 2.5
8.5, 75.5, "Cherry #2", 3, 0
8, 69, "Cherry #3", 0, 0
This file contains the boards we're trying to produce as output.
quantity, width, height, title
2, 6.25, 23.15, "Bottom *"
2, 6.25, 12.25, "Side A"
2, 6.25, 12.25, "Side B"
Configurable options. While these options can all be specified via the command line, it is recommended to store them in options.json so that you can reproduce the exact layout if needed.
groupMultipleBoards If true, boards with quantity > 1 will always be layed out next to each-other. Increases board similarity at the expense of yield.
kerf Saw kerf for cuts. Defaults to 1/8"
stockWaste Amount of stock that might be lost to jointing/planing. Defaults to 1/8"
boardWaste Amount of stock around each cut board that may be lost due to rough cuts. Defaults to 1/8"
{
groupMultipleBoards: true,
kerf: 0.125,
stockWaste: 0.25,
boardWaste: 0.25
}