{
  "revision": "dense-1",
  "gridfinity_pitch_mm": 42,
  "systems": {
    "original": {
      "description": "Existing PF02 #9 and PF07 #5 native connector geometry; unchanged at zero fit adjustment",
      "source": "/peg/",
      "pitch_mm": [
        25.4,
        25.4
      ]
    },
    "skadis": {
      "description": "IKEA SK\u00c5DIS staggered-slot interface",
      "status": "Modeled from reference dimensions; not print tested",
      "reference": "https://github.com/jmylchreest/openscad-models/tree/edeea813c1f7941eea1e2d8fe9e1f844de0a227b/libraries/ikea-skadis",
      "author": "John Mylchreest",
      "license": "MIT",
      "license_file": "sources/skadis/LICENSE",
      "reference_source": "sources/skadis/ikea-skadis.scad",
      "slot_mm": [
        5,
        15
      ],
      "pitch_mm": [
        40,
        20
      ],
      "alternate_row_offset_mm": 20,
      "reference_board_thickness_mm": 5.5,
      "default_clearance_per_side_mm": 0.2,
      "default_board_gap_mm": 0.2,
      "default_retainer_depth_mm": 3,
      "changes": [
        "Ported connector solids to the browser manifold kernel; board-facing Y axis reversed",
        "Independent backplate roots and staggered slot allocation inside shelf width",
        "Tab raised from the rectangular-slot reference to clear the R2.5 slot ends at its selected width",
        "Insertion lift derived from actual tail envelope rather than fixed 10 mm",
        "Positive-volume tail/tab overlap for reliable solid union",
        "Two-slot coupon shares the same connector construction as the shelf"
      ],
      "check_scope": "Digital solids, board collision, export and browser checks; no physical print or board fit test."
    },
    "us_small": {
      "status": "Modeled from reference dimensions; not print tested",
      "connector_reference": "https://mrvarity.com/apps/openscad/g/pegboard-hook/",
      "connector_author": "Eugene Vasenev / mrvarity.com",
      "connector_reference_file": "sources/round/pegboard-hook.scad",
      "connector_reference_sha256": "198168195eb9d69272236abec464706e09ac78caebd587f691866d4535f23118",
      "license": "MIT",
      "license_file": "sources/round/LICENSE",
      "changes": [
        "Ported L-pin hull and flat-sided locating pin to browser manifold geometry",
        "Separate upper-hook and lower-pin clearances; actual hole size and panel thickness are independent",
        "Preserved 5.4 mm backplate root material and 42 mm Gridfinity pitch",
        "Positive-volume overlap between lower pin and tapered nose",
        "No snap barb in this version"
      ],
      "check_scope": "Static panel clearance, fixed board pitch, closed connected exports and browser operation; installation motion and physical fit are not tested.",
      "description": "US small round-hole pegboard",
      "pitch_mm": [
        25.4,
        25.4
      ],
      "hole_shape": "round",
      "hole_size_mm": 4.7625,
      "default_panel_thickness_mm": 3.2,
      "default_upper_clearance_per_side_mm": 0.2,
      "default_lower_clearance_per_side_mm": 0.2,
      "default_behind_board_gap_mm": 0.2,
      "dimension_references": [
        "https://www.panel.com/products/pegboard/",
        "https://www.panel.com/wp-content/uploads/2025/03/Pegboard-Flier-2025.pdf"
      ]
    },
    "us_large": {
      "status": "Modeled from reference dimensions; not print tested",
      "connector_reference": "https://mrvarity.com/apps/openscad/g/pegboard-hook/",
      "connector_author": "Eugene Vasenev / mrvarity.com",
      "connector_reference_file": "sources/round/pegboard-hook.scad",
      "connector_reference_sha256": "198168195eb9d69272236abec464706e09ac78caebd587f691866d4535f23118",
      "license": "MIT",
      "license_file": "sources/round/LICENSE",
      "changes": [
        "Ported L-pin hull and flat-sided locating pin to browser manifold geometry",
        "Separate upper-hook and lower-pin clearances; actual hole size and panel thickness are independent",
        "Preserved 5.4 mm backplate root material and 42 mm Gridfinity pitch",
        "Positive-volume overlap between lower pin and tapered nose",
        "No snap barb in this version"
      ],
      "check_scope": "Static panel clearance, fixed board pitch, closed connected exports and browser operation; installation motion and physical fit are not tested.",
      "description": "US large round-hole pegboard",
      "pitch_mm": [
        25.4,
        25.4
      ],
      "hole_shape": "round",
      "hole_size_mm": 7.14375,
      "default_panel_thickness_mm": 5.5,
      "default_upper_clearance_per_side_mm": 0.2,
      "default_lower_clearance_per_side_mm": 0.2,
      "default_behind_board_gap_mm": 0.2,
      "dimension_references": [
        "https://www.panel.com/products/pegboard/",
        "https://www.panel.com/wp-content/uploads/2025/03/Pegboard-Flier-2025.pdf"
      ]
    },
    "wall_control": {
      "status": "Modeled from reference dimensions; not print tested",
      "connector_reference": "https://mrvarity.com/apps/openscad/g/pegboard-hook/",
      "connector_author": "Eugene Vasenev / mrvarity.com",
      "connector_reference_file": "sources/round/pegboard-hook.scad",
      "connector_reference_sha256": "198168195eb9d69272236abec464706e09ac78caebd587f691866d4535f23118",
      "license": "MIT",
      "license_file": "sources/round/LICENSE",
      "changes": [
        "Ported L-pin hull and flat-sided locating pin to browser manifold geometry",
        "Separate upper-hook and lower-pin clearances; actual hole size and panel thickness are independent",
        "Preserved 5.4 mm backplate root material and 42 mm Gridfinity pitch",
        "Positive-volume overlap between lower pin and tapered nose",
        "No snap barb in this version"
      ],
      "check_scope": "Static panel clearance, fixed board pitch, closed connected exports and browser operation; installation motion and physical fit are not tested.",
      "description": "Wall Control round holes",
      "pitch_mm": [
        25.4,
        25.4
      ],
      "hole_shape": "round",
      "hole_size_mm": 6.35,
      "default_panel_thickness_mm": 0.9,
      "default_upper_clearance_per_side_mm": 0.2,
      "default_lower_clearance_per_side_mm": 0.2,
      "default_behind_board_gap_mm": 0.2,
      "dimension_references": [
        "https://blog.wallcontrol.info/2012/09/pegboard-product-feature-horizontally.html",
        "https://www.wallcontrol.com/content/6thcatalog.pdf"
      ],
      "panel_thickness_note": "0.9 mm is a provisional default based on the cited 20-gauge panel; measure the finished panel. Uses round holes, not proprietary slots."
    },
    "metric25": {
      "status": "Modeled from reference dimensions; not print tested",
      "connector_reference": "https://mrvarity.com/apps/openscad/g/pegboard-hook/",
      "connector_author": "Eugene Vasenev / mrvarity.com",
      "connector_reference_file": "sources/round/pegboard-hook.scad",
      "connector_reference_sha256": "198168195eb9d69272236abec464706e09ac78caebd587f691866d4535f23118",
      "license": "MIT",
      "license_file": "sources/round/LICENSE",
      "changes": [
        "Ported L-pin hull and flat-sided locating pin to browser manifold geometry",
        "Separate upper-hook and lower-pin clearances; actual hole size and panel thickness are independent",
        "Preserved 5.4 mm backplate root material and 42 mm Gridfinity pitch",
        "Positive-volume overlap between lower pin and tapered nose",
        "No snap barb in this version"
      ],
      "check_scope": "Static panel clearance, fixed board pitch, closed connected exports and browser operation; installation motion and physical fit are not tested.",
      "description": "Metric round holes on 25 mm grid",
      "pitch_mm": [
        25,
        25
      ],
      "hole_shape": "round",
      "hole_size_mm": 6,
      "default_panel_thickness_mm": 5,
      "default_upper_clearance_per_side_mm": 0.2,
      "default_lower_clearance_per_side_mm": 0.2,
      "default_behind_board_gap_mm": 0.2,
      "dimension_references": [
        "https://mrvarity.com/apps/openscad/g/pegboard-hook/"
      ]
    },
    "bott_perfo": {
      "status": "Modeled from reference dimensions; not print tested",
      "connector_reference": "https://mrvarity.com/apps/openscad/g/pegboard-hook/",
      "connector_author": "Eugene Vasenev / mrvarity.com",
      "connector_reference_file": "sources/round/pegboard-hook.scad",
      "connector_reference_sha256": "198168195eb9d69272236abec464706e09ac78caebd587f691866d4535f23118",
      "license": "MIT",
      "license_file": "sources/round/LICENSE",
      "changes": [
        "Ported L-pin hull and flat-sided locating pin to browser manifold geometry",
        "Separate upper-hook and lower-pin clearances; actual hole size and panel thickness are independent",
        "Preserved 5.4 mm backplate root material and 42 mm Gridfinity pitch",
        "Positive-volume overlap between lower pin and tapered nose",
        "No snap barb in this version"
      ],
      "check_scope": "Static panel clearance, fixed board pitch, closed connected exports and browser operation; installation motion and physical fit are not tested.",
      "description": "Bott Perfo square perforations",
      "pitch_mm": [
        38.1,
        38.1
      ],
      "hole_shape": "square",
      "hole_size_mm": 9.2,
      "default_panel_thickness_mm": 0.9,
      "default_upper_clearance_per_side_mm": 0.2,
      "default_lower_clearance_per_side_mm": 0.2,
      "default_behind_board_gap_mm": 0.2,
      "dimension_references": [
        "https://www.bott.de/en/content/download/1596/file/EN_2023_Fiat_low.pdf"
      ],
      "panel_thickness_note": "Hole size and pitch follow the manufacturer. 0.9 mm panel thickness is provisional and adjustable. Uses our L-hook, not the Perfo locking-clip interface."
    },
    "multiboard": {
      "description": "Multiboard M3 nut snap mounts",
      "status": "Modeled from reference dimensions; not print tested",
      "mount_type": "M3 socket-head screws into separate board inserts",
      "insert_reference": "https://thangs.com/designer/MultiBuild/3d-model/Drop-In%20Nut%20Snap%20-%20M3-1030686",
      "external_connector_included": false,
      "geometry_code": "Original screw-hole and counterbore geometry; no external connector mesh or thread is copied",
      "pitch_mm": [
        25,
        25
      ],
      "screw_hole_diameter_mm": 3.4,
      "counterbore_diameter_mm": 6.2,
      "default_counterbore_depth_mm": 3.2,
      "minimum_remaining_backplate_mm": 2,
      "check_scope": "Our screw clearance, bearing material, board-grid positions, closed connected exports and browser operation. External insert snap fit is not tested.",
      "dimension_references": [
        "https://multibuild.io/",
        "https://thangs.com/designer/MultiBuild/3d-model/Drop-In%20Nut%20Snap%20-%20M3-1030686"
      ],
      "external_connector_license": "Creator license applies to the separately downloaded insert: https://multibuild.io/license",
      "forward_head_access_mm": 10,
      "tool_note": "Local clearance for a short L-shaped Allen key; not a full-length straight driver channel.",
      "recess_mouth_chamfer_mm": 0.3
    },
    "hsw": {
      "description": "Honeycomb Storage Wall M3 insert mounts",
      "status": "Modeled from reference dimensions; not print tested",
      "mount_type": "M3 socket-head screws into separate board inserts",
      "insert_reference": "https://www.printables.com/model/152592-honeycomb-storage-wall",
      "external_connector_included": false,
      "geometry_code": "Original screw-hole and counterbore geometry; no external connector mesh or thread is copied",
      "pitch_mm": [
        20.43819952931275,
        23.6
      ],
      "screw_hole_diameter_mm": 3.4,
      "counterbore_diameter_mm": 6.2,
      "default_counterbore_depth_mm": 3.2,
      "minimum_remaining_backplate_mm": 2,
      "check_scope": "Our screw clearance, bearing material, board-grid positions, closed connected exports and browser operation. External insert snap fit is not tested.",
      "grid_reference": "https://github.com/geru/3d-scad-hsw-customizable/blob/b606f2e8427e7648748fdc9833f6621884e78d2e/custom-honeycomb-wall-v2.3.scad",
      "grid_reference_credit": "Xander, EdwinEesting and geru; CC BY 4.0",
      "grid_derivation": "20 mm inner flats + 2 \u00d7 1.8 mm walls = 23.6 mm vertical pitch. Adjacent hex columns are 23.6 \u00d7 sqrt(3) / 2 mm apart horizontally, with alternating columns shifted down 11.8 mm.",
      "external_connector_reference": "https://github.com/elentok/honeycomb-wall/tree/main/originals (insert-m3.stl; reference only, not redistributed)",
      "forward_head_access_mm": 10,
      "tool_note": "Local clearance for a short L-shaped Allen key; not a full-length straight driver channel.",
      "recess_mouth_chamfer_mm": 0.3,
      "alternate_column_vertical_offset_mm": 11.8
    }
  },
  "export_checks": {
    "edge_incidence": 2,
    "winding": "opposite directions",
    "float32_normalization": "Only after a closure failure on a new board export; coordinate-precision tolerance, one-solid check and symmetric-difference guard, followed by strict revalidation",
    "maximum_symmetric_volume_fraction": 1e-05
  },
  "mount_layout": "Every usable hole across the selected width and mounting height; roots remain inside the frame."
}