{
  "CAD_and_pickup": {
    "id": "HX01",
    "name": "Open-front metric hex-key rack",
    "cells": 7,
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    "pickup_forward_mm": 70,
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        },
        {
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        {
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        {
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        },
        {
          "af_mm": 4,
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        },
        {
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        {
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        },
        {
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        {
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          "short_arm_mm": 50,
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      ],
      "reference": "EGA Master long-pattern dimensions; swept hex sections; bend radius is an explicit assumption"
    },
    "description": "Nine upright L-keys, 1.5\u201310 mm. Short arms rest on the floor. Lift 9 mm and pull forward through the open guides.",
    "prefix": "part-hx01__v1__upright__fit-pf02c9-hoop5",
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        "arm_mm": 0.8,
        "tip_half": 2.0,
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        "ramp_wall": true,
        "nose_mm": 0.9,
        "root_gusset_mm": 0.4,
        "body_ribs_mm": 0.3,
        "orientation": "hoop band horizontal, flexes in X (the print layers)",
        "detail": {
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          "catch_angle_deg": 55,
          "catch_length_mm": 0.6476919728439815,
          "ramp_angle_deg": 15.592255624701878,
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          "catch_bearing_per_side_mm": 0.5,
          "nose_mm": 0.9,
          "ramp_wall_mm": 0.8,
          "min_wall_mm": 0.8,
          "root_gusset_mm": 0.4,
          "root_gusset_length_mm": 1.5,
          "arm_mm": 0.8,
          "closed_nose_mm": 0.9,
          "band_half_height_mm": 1.4,
          "root_clip_radius_mm": 2.95,
          "cheek_offset_down_mm": 0.0
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      "rows": {
        "hooks": [
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        "bearing": [],
        "hoop": [
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        "empty": [
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      "predicted_clamp_interference_at_3p94_mm": 0.4900000000000001
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    "checks": {
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      "solids": 1,
      "unchanged_board_side_delta_mm3": 0.0,
      "tool_routes": [
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          "seated_clearance_mm": 0.060000000000002274,
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          "forward_mm": 70
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        {
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        {
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          "forward_mm": 70
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        {
          "tool_index": 3,
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        {
          "tool_index": 4,
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        {
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        {
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          "forward_mm": 70
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        {
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        {
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      ],
      "tool_neighbor_clearances_mm": [
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        69.25,
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        121.25,
        138.25,
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      "limits": "Sampled rigid tool-envelope pickup checks. Physical fit, support removal, stiffness, loads, and complete holder installation require testing. Tool shape assumptions are in reference metadata."
    },
    "source_sha256": "1f47c8c844a067489c2b1ba42762d8a651eaa236ec222881440ac1ca6ea5f630",
    "FreeCAD_version": [
      "1",
      "1",
      "4",
      "20260928 (Git shallow)",
      "Unknown",
      "2026/09/28 13:46:34",
      "(HEAD detached at 4fd3bf320)",
      "4fd3bf320d9566a27e60069fc8387448aaa3a094"
    ]
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    "components": 1,
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    "overhangs": {
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      "peg_area_mm2": 130.5,
      "other_area_mm2": 0.0,
      "passed": true
    },
    "islands": {
      "points": [],
      "passed": true
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    "bed_face_mm2": 11576.430435676579,
    "bounds_mm": [
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    "inputs": {
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      "print_stl": "db654ca66a2cf694e999d8b47c91cec16a78bf75dd77928aefff35137b047267"
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    "passed": true
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  "stiffness": {
    "name": "part-hx01__v1__upright__fit-pf02c9-hoop5",
    "material": {
      "E_MPa": 1800.0,
      "nu": 0.35
    },
    "h_mm": 2.5,
    "cases": [
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        "support": "pegs",
        "nodes": 118390,
        "elements": 62326,
        "fixed_nodes": 4472,
        "loads": [
          {
            "id": "sideways",
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            "point": [
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            "what": "",
            "deflection_at_load_mm": 0.0022,
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            "max_at": [
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          },
          {
            "id": "down",
            "force_N": [
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              -5
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            "what": "",
            "deflection_at_load_mm": 0.1469,
            "stiffness_N_per_mm": 34.0,
            "max_deflection_mm": 0.1654,
            "max_at": [
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              66.0,
              -46.0
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          }
        ]
      }
    ],
    "passed": true,
    "limits": "Linear isotropic solid ASA E=1800 MPa. Printed infill, layer bonds, board compliance, strength and fatigue require physical checks.",
    "inputs": {
      "step": "bc0f31ee305eabf0e8923b14c63d6ad057e77c4bceffd30fbc2f3ba1c7b355cd",
      "spec": "ebef3d0fb507539b9aed71a67a41dabae798100d53114a95471b1c095a1d0e8d",
      "solver_script": "5c2f08b389a0858e01395b01354c35fa184c2258263639a49d4f120d41dc77f1"
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  "toolpaths": {
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    "input_stl_sha256": "db654ca66a2cf694e999d8b47c91cec16a78bf75dd77928aefff35137b047267",
    "time": "3h 38m 48s",
    "density_g_cm3": 1.02,
    "extrusion_grams": 79.65,
    "features": {
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        "maximum": [
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        "moves": 564,
        "body_side_filament_mm": 112.66505999999998,
        "grams": 0.41,
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      "Support": {
        "extruded_filament_mm": 829.3595499999934,
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        "maximum": [
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        "moves": 9225,
        "body_side_filament_mm": 0,
        "grams": 2.035,
        "body_side_grams": 0.0
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      "Inner wall": {
        "extruded_filament_mm": 9450.28091000065,
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        "maximum": [
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        "moves": 61573,
        "body_side_filament_mm": 7682.536920000929,
        "grams": 23.185,
        "body_side_grams": 18.8482
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      "Outer wall": {
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        "maximum": [
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        "moves": 34447,
        "body_side_filament_mm": 5920.260279999965,
        "grams": 18.65,
        "body_side_grams": 14.5247
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      "Bottom surface": {
        "extruded_filament_mm": 867.932199999993,
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        "maximum": [
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        "moves": 735,
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        "grams": 2.129,
        "body_side_grams": 2.1217
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      "Internal solid infill": {
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        "moves": 9385,
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        "grams": 10.864,
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      "Sparse infill": {
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        "moves": 100781,
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        "grams": 17.23,
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      "Internal Bridge": {
        "extruded_filament_mm": 1240.9039299999577,
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        "moves": 1626,
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        "grams": 3.044,
        "body_side_grams": 3.0225
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      "Top surface": {
        "extruded_filament_mm": 842.19101999999,
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        "maximum": [
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        "moves": 1989,
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        "grams": 2.066,
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      "Overhang wall": {
        "extruded_filament_mm": 3.7258500000000017,
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        "moves": 142,
        "body_side_filament_mm": 0,
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      "Support interface": {
        "extruded_filament_mm": 9.908139999999987,
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        "moves": 402,
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    },
    "limits": "Feature classification and deposited centerline bounds, with commanded arc sweeps sampled at <=0.2 mm where below the 2048-point cap. Supports may flare at the bed; support contact and removal need visual review."
  },
  "installation_screen": {
    "pass": true,
    "minimum_front_board_y_mm": 0.0,
    "poses": 1855,
    "max_point_step_mm": 0.05,
    "mesh_deflection_mm": 0.005,
    "worst": {
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      "translation_y": -0.15,
      "angle_deg": 0.0
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    "scope": "Front material vs board plane only; sampled nominal reference route, not certification of changed interference pegs or physical installation.",
    "input_sha256": "bc0f31ee305eabf0e8923b14c63d6ad057e77c4bceffd30fbc2f3ba1c7b355cd",
    "checker_sha256": "b539534deb12583027433caa51aff5844ac7526dff4e92f73d128be09c57c59e"
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  "physical_tests": "Pending",
  "external_reference_fit": {
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    "references": [
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        "af_mm": 2,
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        "valid": true,
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      {
        "af_mm": 3,
        "source_sha256": "6684c87680a8e5e9c0460bccaa06fc467d1d95633abcf6f951b6461f2c7c1cb5",
        "valid": true,
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        "max_intersection_mm3": 0.0,
        "poses": 89,
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      {
        "af_mm": 4,
        "source_sha256": "8859163ed2519b13bac53a96dc5ef94850a91767017ee52bb25be07a1e320777",
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        "max_intersection_mm3": 0.0,
        "poses": 89,
        "passed": true
      }
    ],
    "passed": true,
    "limits": "Nominal rigid CAD clearance. The models are unmeasured generic short keys; physical fit and handling remain pending."
  },
  "resting_keys": {
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    "keys": [
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        "af_mm": 1.5,
        "lean_back_deg": 5.388681640625,
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        "collision_mm3": 0.0,
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      {
        "af_mm": 2,
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        "collision_mm3": 0.0,
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        "passed": true
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      {
        "af_mm": 2.5,
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      {
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        "pickup_peak_intersection_mm3": 0,
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      {
        "af_mm": 4,
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      {
        "af_mm": 5,
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      {
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      {
        "af_mm": 8,
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      {
        "af_mm": 10,
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        "closest_board_plane_mm": 3.978483003155898,
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        "pickup_peak_intersection_mm3": 0,
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    "holder_step_sha256": "bc0f31ee305eabf0e8923b14c63d6ad057e77c4bceffd30fbc2f3ba1c7b355cd",
    "limits": "Floor plus rear-plate lean contact. Contact surfaces are approximated by a 0.06 mm floor gap and 0.01 degree angular backoff. Friction, spring compliance, bumps and human grip remain physical tests."
  }
}