gcode.ts

import { BIT_DIA, cutSize, holeXY, type Cabinet } from "./model";

// CAM for the BobsCNC KL744 (GRBL): turns a Cabinet's board nest into
// G-code ready for Universal Gcode Sender. Same single source of truth —
// toolpaths are derived from the cabinet definition, never hand-edited.
//
// Setup assumed by the output:
//   - units: inches (G20), absolute (G90)
//   - X0 Y0 at the board's lower-left corner, Z0 at the TOP of the stock
//   - 1/4" upcut bit; router speed is set by hand on the KL744
//
// Order of operations per board: POCKETS first (parts still fully captive),
// then outside PROFILES with holding tabs on the final passes so freed
// parts can't shift into the bit. Cut the tabs free with a chisel.

export const CAM = {
  bitDia: BIT_DIA, // 1/4" upcut end mill — ONE tool for everything (model.ts owns the size)
  // shallow-and-fast: belt-driven machines like the KL744 cut cleanest with
  // small bites at a brisk feed (the classic hobby-CAM recipe is ~0.03" @ 250)
  feed: 80, // cutting feed, in/min