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gerber_to_scad

Simple python script for converting gerber files into a 3d printable solder stencil scad file

Installation

gerber to scad requires python3.9

Note: on M1 macs, scipy doesn't install correctly out of the box. If you're getting installation errors, try this:

brew install openblas
export OPENBLAS="$(brew --prefix openblas)"
poetry install

Usage

  • To activate the poetry virtualenv, run poetry shell.

You should now be able to run the script. You'll get some information on available options if you run it with the -h argument:

(env) $ python main.py -h
usage: main.py [-h] [-t THICKNESS] [-n] [-L LEDGE_HEIGHT] [-g GAP]
                         [-i INCREASE_HOLE_SIZE]
                         outline_file solderpaste_file output_file

Convert gerber files to an scad 3d printable solder stencil.

positional arguments:
  outline_file          Outline file
  solderpaste_file      Solderpaste file
  output_file           Output file

optional arguments:
  -h, --help            show this help message and exit
  -t THICKNESS, --thickness THICKNESS
                        Thickness (in mm) of the stencil. Make sure this is a
                        multiple of the layer height you use for printing
                        (default: 0.2)
  -n, --no-ledge        By default, a ledge around half the outline of the
                        board is included, to allow aligning the stencil
                        easily. Pass this to exclude this ledge.
  -L LEDGE_HEIGHT, --ledge-height LEDGE_HEIGHT
                        Height of the stencil ledge. This should be less than
                        the thickness of the PCB (default: 1.2)
  -g GAP, --gap GAP     Gap (in mm) between board and stencil ledge. Increase
                        this if the fit of the stencil is too tight (default:
                        0.0)
  -i INCREASE_HOLE_SIZE, --increase-hole-size INCREASE_HOLE_SIZE
                        Increase the size of all holes in the stencil by this
                        amount (in mm). Use this if you find holes get printed
                        smaller than they should (default: 0.0)

For basic usage, simply run the script with input files for the gerber outline and solderpaste files and specify an output:

python main.py outline_file.gko toppaste_file.gtp output.scad

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Simple python script for converting gerber files into a 3d printable solder stencil scad file

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