neĝero

SnowFlake G-code generator

For printing on 3D printer with transparent material PETG, Polycarbonate, etc. In a single layer.

Generate set of continious outline paths expanding from center with branches under 30 degrees.

Examples

npx neghero -j "{tree:[4,[3,[10,[8,[2,1,1],[3,1,1]],[5,5,[3,2,[2,1,1]]]],3],3],s:8,l:7,p:2.8}" -o neghero-0004.gcode

npx neghero -j "{tree:[7,[4,[5,[7,[5,[2,[5,[6,[6,[7,5,1],7],3],15],2],1],[9,[4,4,2],3]],5],5],3],s:4,l:11,p:2.8}" -o neghero-0005.gcode

npx neghero -j "{tree:[7,[5,[11,[12,[4,[6,[9,4,4],10],15],13],16],5],3],l:15,p:2.8}" -o neghero-0006.gcode

npx neghero -j "{tree:[7,[5,[11,[11,[10,[9,[7,2,1],5],[5,4,1]],[6,[5,5,1],1]],[7,[7,4,2],3]],8],4],l:9,p:2.8}" -o neghero-0007.gcode

npx neghero -j "{tree:[8,[3,7,8],5],s:10,l:11,p:2.8}" -o neghero-0003.gcode

CLI usage

npx neghero

Usage: neghero [options]

Options:
  -c, --config <file>   config file (JSON5)
  -j, --json <string>   config string (JSON5)
  -p, --profile <file>  printer / material profile file (JSON5)
  -o, --output <file>   output G-code file
  -h, --help            display help for command

SnowFlake configuration format

Each unique snoflake is defined by object with following properties:

tree:

A structure, defining topology of snowflake arms. It is a recursive structure of nodes, where node is a 3 element array:

Node

[trunk, center, side]

• trunk - natural number defining length of trunk line.
• center - element defining center branch. Could be:
  • natural number, for a final central branch.
  • Node, for a next level of the tree.
• side - element defining two side branches. Could be:
  • natural number, for a final side branches.
  • Node, for a next level of the tree.

s:

Tree scale. natural number to scale tree numbers. (optional, default: 4)

l:

Layer count. natural number defining number of layers lines around the skeleton of the tree. (optional, default: 4)

p:

display/print grid pitch. (optional, default: 2)

Online version

https://observablehq.com/@drom/neghero

Other

View G-code online: https://ncviewer.com

TODO

Online version: neghero.drom.io

Printer / material related parameters:

• line spacing
• line width
• layer height
• print speed