laser-cutter: A Ruby repository from pretentiousgit

LaserCutter and Make-A-Box.io

laser-cutter is a ruby library for generating PDF designs for boxes of custom dimensions that suit your project, that can be cut from wood or acrylic using a laser-cutter. The sides of the box snap together using alternating notches, that are deliberately layed out in a symmetric form.

To use laser-cutter you need to have a recent version of ruby interpreter, install it as a gem, and use command line to generate PDFs.

Make-A-Box is a online web application that uses laser-cutter library and provides a straight-forward user interface for generating PDF designs without the need to install the gem or use command line.

Use whatever suites you better.

Design Goals

One of the design goals of this project is to provide a highly extensible platform for creating laser-cut designs, where alternative strategies can be added over time, and supported by various command line options, and perhaps a light weight web application. If you are interested in contributing to the project, please see contributing for more details.

laser-cutter supports many flexible command line options that allow setting dimensions, stroke width, page size, layout, margins, padding (spacing between the boxes), and many more.

Dependencies

The gem depends primarily on Prawn – a fantastic PDF generation library.

Installation

Add this line to your application's Gemfile:

gem 'laser-cutter'

And then execute:

$ bundle

Or install it yourself as:

$ gem install laser-cutter

Usage

Usage: laser-cutter [options] -o filename.pdf
   eg: laser-cutter -z 1x1.5x2/0.125 -O -o box.pdf

Specific Options:
    -w, --width WIDTH                Internal width of the box
    -h, --height HEIGHT              Internal height of the box
    -d, --depth DEPTH                Internal depth of the box
    -t, --thickness THICKNESS        Thickness of the box material
    -n, --notch NOTCH                Optional notch length (aka "tab width"), guide only
    -k, --kerf KERF                  Kerf - cut width (default is 0.0024in)

    -m, --margin MARGIN              Margins from the edge of the document
    -p, --padding PADDING            Space between the boxes on the page
    -s, --stroke WIDTH               Numeric stroke width of the line
    -i, --page_size LETTER           Document page size, default is autofit the box.
    -l, --page_layout portrait       Page layout, other option is 'landscape'

    -O, --open                       Open generated file with system viewer before exiting
    -W, --write CONFIG_FILE          Save provided configuration to a file, use '-' for STDOUT
    -R, --read CONFIG_FILE           Read configuration from a file, or use '-' for STDIN

    -L, --list-all-page-sizes        Print all available page sizes with dimensions and exit
    -M, --no-metadata                Do not print box metadata on the PDF
    -v, --[no-]verbose               Run verbosely
    -B, --inside-box                 Draw the inside boxes (helpful to verify kerfing)
    -D, --debug                      Show full exception stack trace on error

        --examples                   Show detailed usage examples
        --help                       Show this message
        --version                    Show version

Common Options:
    -o, --file FILE                  Required output filename of the PDF
    -z, --size WxHxD/T[/N]           Combined internal dimensions: W = width, H = height,
                                     D = depth, T = thickness, and optional N = notch length

    -u, --units UNITS                Either 'in' for inches (default) or 'mm'

Examples

Create a box defined in inches, with kerf (cut width) set to 0.005in, and open PDF in preview right after:

    laser-cutter -z 3x2x2/0.125 -k 0.005 -O -o box.pdf

Create a box defined in millimeters, print verbose info, and set page size to A3, and layout to landscape, and stroke width to 1/2mm:

    laser-cutter -u mm -w70 -h20 -d50 -t4.3 -n5 -iA3 -l landscape -s0.5 -v -O -o box.pdf

List all possible page sizes in metric system:

    laser-cutter -L -u mm

Create a box with provided dimensions, and save the config to a file for later use:

    laser-cutter -z 1.1x2.5x1.5/0.125/0.125 -p 0.1 -O -o box.pdf -W box-settings.json

Read settings from a previously saved file:

    laser-cutter -O -o box.pdf -R box-settings.json
    cat box-settings.json | laser-cutter -O -o box.pdf -R -

Feature Wish List

Create T-style joins, using various standard sizes of nuts and bolts (such as common #4-40 and M2 sizes)
Extensibility with various layout strategies, notch drawing strategies, basically plug and play model for adding new algorithms for path creation and box joining
Support more shapes than just box, such as prisms
Supporting lids and front panels, that are larger than the box itself and have holes for notches.
Your brilliant idea can be here too! Please see contributing for more info.

LaserCutter vs BoxMaker

Rahulbot-made BoxMaker is a functional generator of notched designs, similar to laser-cutter, and generously open sourced by the author, and so in no way this project disputes BoxMaker's viability. In fact BoxMaker was an inspiration for this project.

Laser-Cutter library attempts to further advance the concept of programmatically creating laser-cut box designs, provides additional fine tuning, many more options, strategies and most importantly – extensibility.

Unlike BoxMaker, this gem has a suit of automated tests (rspecs) around the core functionality. In addition, new feature contributions are highly encouraged, and in that regard having existing test suit offers confidence against regressions, and thus welcomes colaboration.

Finally, BoxMaker's notch-drawing algorithm generates non-symmetric and sometimes purely broken designs (see picture below).

laser-cutter's algorithm will create a symmetric design for most panels, but it might sacrifice identical notch length. Depending on the box dimensions you may end up with a slightly different notch length on each side of the box.

The choice ultimately comes down to the preference and feature set, so here I show you two boxes made with each program, so you can pick what you prefer.

Example Outputs

Below are two examples of boxes with identical dimensions produced with laser-cutter and boxmaker:

This is how you would make a box with Adam Phelp's fork of BoxMaker (which adds flags and a lot of niceties):

git clone https://github.com/aphelps/boxmaker && cd boxmaker && ant
java -cp BOX.jar com.rahulbotics.boxmaker.BoxMaker \
      -W 1 -H 2 -D 1.5 -T 0.125 -n 0.125 -o box.pdf

And laser-cutter:

gem install laser-cutter
laser-cutter -z 1x1.5x2/0.125/0.125 -O -o box.pdf

Contributing

Fork it ( https://github.com/[my-github-username]/laser-cutter/fork )
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Push to the branch (git push origin my-new-feature)
Create a new Pull Request

pretentiousgit/laser-cutter