"""Work order: the commercial paperwork the jeweler prints with the job. Self-contained HTML: spec, exact dims, per-alloy weights, print/cast instructions with the shrink-compensation warning, setting notes, and a QC checklist. Volumes come from the exported STLs (trimesh): no CAD rebuild. """ from __future__ import annotations import base64 import datetime import html import importlib.util import json import sys from pathlib import Path from ringcli.alloys import DENSITY, alloy_from_metal def _load_spec(gen_path: Path) -> dict: spec = importlib.util.spec_from_file_location("gen_mod", gen_path) mod = importlib.util.module_from_spec(spec) sys.path.insert(0, str(gen_path.parent)) spec.loader.exec_module(mod) return mod.SPEC def write_workorder(gen_path: str, outdir: str) -> str: gen = Path(gen_path) outdir = Path(outdir) spec = _load_spec(gen) name = spec["name"] from ringcli.templates import head_dims hd = head_dims(spec) import trimesh cast = trimesh.load(outdir / f"{name}-cast.stl") vol = cast.volume prints = sorted(outdir.glob(f"{name}-print*.stl")) print_file = prints[-1].name if prints else "(print STL missing)" print_vol = trimesh.load(prints[-1]).volume if prints else 0.0 shrink = float(spec.get("casting", {}).get("shrink_scale", 1.0)) alloy = alloy_from_metal(spec.get("metal", "white"), spec.get("casting")) stone_mm = spec.get("stone_mm") production = bool(spec.get("production")) or stone_mm is not None st = hd["style"] png = outdir / f"{name}.png" img = "" if png.exists(): b64 = base64.b64encode(png.read_bytes()).decode() img = f'

' rows = "".join( f"{a}" f"{vol * d:.2f} g{print_vol * d:.2f} g" for a, d in DENSITY.items()) if stone_mm: stone_desc = (f"{stone_mm['width']} × {stone_mm['length']} × " f"{stone_mm.get('depth', '?')} mm (from cert " f"{html.escape(str(spec.get('stone', {}).get('cert', 'n/a')))})") stone_warn = "" else: stone_desc = (f"{hd['stone_w']:.2f} × {hd['stone_l']:.2f} mm") stone_warn = ('

ESTIMATED from carat: measure the ' 'physical stone before setting.

') if shrink != 1.0: shrink_box = (f'

Print file is PRE-SCALED ×{shrink:.4f} ' f'for casting shrinkage: slicer scale MUST stay 100%.

') else: shrink_box = ('

Print file is at NOMINAL size: apply ' 'your calibrated shrink % in the slicer ' '(run ringcli calibrate to dial it in).

') arch = hd["arch"] if arch == "bezel": setting = (f"Bezel: lip {st.get('bezel_lip_mm', st['bezel_lip'])} mm above " "girdle, clearance built in: burnish over after seating.") else: setting = (f"Prongs: tips extend ~{st.get('prong_overlength_mm', 1.2)} mm " "above the crown. Cut the bearing at girdle height (~1/2 prong " "depth), seat the stone, bend and shape tips. Bearing " f"clearance {st.get('seat_clearance_mm', 0.08)} mm per side is " "built into the seat: do not open further.") if arch in ("halo", "pave"): setting += (" Halo/pavé melee are DECORATIVE in CAD: bench-set with " "calibrated melee; the azure holes are the drill guides.") now = datetime.date.today().isoformat() doc = f""" Work order: {html.escape(name)}

Work order: {html.escape(name)} ({now})

{img}

Ring

US size {spec.get('size')}: inner Ø {2 * hd['inner_r']:.2f} mm · band {st['band_width']:.2f} × {st['band_thickness']:.2f} mm · head top {hd['girdle_z'] + hd['crown_h']:.1f} mm from center · {'PRODUCTION build' if production else 'CONCEPT build (not for production)'}

Stone

{spec.get('cut')}: {stone_desc}, {spec.get('carat')} ct nominal

{stone_warn}

Metal

Cast body {vol:.1f} mm³; with sprue/stems {print_vol:.1f} mm³.

{rows}

alloy	ring weight	with sprues

Densities are nominal: confirm with your caster.

Print & cast

Print {html.escape(print_file)} in castable resin, upright as exported (sprue and stems land on the plate). Add fine slicer supports for any overhangs the stems don't cover. Standard burnout for your resin; our sprue is the casting feed.

{shrink_box}

Setting

{setting}

QC checklist

Seat coupon printed; REAL stone drops to girdle line, sits level
Print ID / band dims spot-checked with calipers
Cast ring ID within ±0.05 mm of size {spec.get('size')}
No porosity at prong bases / bezel lip
Prongs full length after cleanup
Stone tight and level after setting
Final weight recorded vs estimate

Spec

{html.escape(json.dumps(spec, indent=2))}

""" out = outdir / f"{name}-workorder.html" out.write_text(doc) return str(out) if __name__ == "__main__": print(write_workorder(sys.argv[1], sys.argv[2]))