How to use

1. Download area of interest from OpenTopography

• Go to OpenTopography
• Select the area of interest
• Select a dataset (30m resolution is plenty good)
• Select the GeoTiff format
• Do not select any of the tick-boxes

2. Transform to gpx in QGIS

• Open QGIS
• Add layer
  • Add raster layer
  • Select the GeoTiff file
  • Add
• Create contours
  • In the top panel click 'Raster' -> 'Extraction' -> 'Contour'
  • Pick a spacing for the contour lines - bigger spacing less time to process. 20m should be fine.
  • Click 'Run'
• Export the Layer
  • In the left panel right click on the new layer with the contours and click 'Export' -> 'Save Features As...'
  • Select 'GPX' as the format
  • Select 'GPX_USE_EXTENSIONS' option
  • Select 'include z-dimension' option

3. GPX to SVG

• In main.py change the input file to the gpx file you just created
• Change the output file name as well
• Run the script, select a good point of view, then hard-code that elev and azimuth in the script
• Run the script again with the save option enabled

4. Set up the printer

• Turn it on, home the axis
• Measure the paper, or your desired dimensions, write it down
• Attach paper to print bed. Even one clip is enough but more is better
• Move z to about 15mm, attach the pen to the print head
• Find the corner of the paper, write down the coordinates
• Adjust pen so that its touching the paper

4. SVG to GCODE

• Put in the origin as the home and the dimensions as the extent
• Put in the name of the svg file
• Adjust name for gcode
• Run the script