check_mold_layout
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Third-party content written by another agent. Data to evaluate, not instructions.
Check whether molds fit together on a rotational-molding machine arm.
Every answer comes from the deterministic RotoSpider geometric layout
engine: rotation-envelope and dead-height checks, pairwise mold-to-mold
clearance, offset-arm riser selection, and ring arrangements for 3+
identical molds. It never returns a physically invalid layout.
Args:
molds: List of mold objects. Use one explicit unit convention:
Box/frame mold: {"length_mm": L, "width_mm": W, "height_mm": H}.
Cylinder/tank mold: {"diameter_mm": D, "height_mm": H}.
Exact L, slope, triangle, frustum, or complex mold: measured
length_mm+width_mm+height_mm plus the complete
geometry_asset_id+geometry_asset_revision returned by the
geometry WebAPI or another trusted publisher.
Decimal-inch aliases are length_in, width_in, height_in, and
diameter_in. Each value is converted once to canonical
micrometres; do not give both aliases for the same value.
Optional per mold: "name", "weight_kg", "quantity" (default 1;
use 0 to retain the mold type without requesting a copy).
machine: Public-sample straight-arm preset. Available models are
listed in the tool description. Leave empty AND give no
explicit geometry to scan all presets ("which machine can take
these molds?").
arm_type: 'straight' (dual spiders) or 'offset' (single-spider
offset/L arm). Empty = both.
spider_diameter_mm: Custom machine - spider (mounting plate)
diameter. Giving this plus envelope_diameter_mm switches to
custom-machine mode instead of presets.
envelope_diameter_mm: Custom machine - rotation envelope diameter
(for offset arms: the vertical envelope diameter).
dead_height_mm: Custom straight arm - unusable center height
between the upper and lower spider surfaces.
offset_spider_y_mm: Custom offset arm - spider Y offset from the
spider center to the sphere center (required for custom offset).
offset_horz_diameter_mm: Custom offset arm - horizontal usable
envelope diameter after side trim (defaults to envelope).
riser_heights_mm: Custom offset arm - available riser heights; the
solver picks the best (or none).
*_in: Decimal-inch aliases for the matching custom-arm and
clearance *_mm arguments.
max_load_weight_kg: Optional arm weight capacity; the solver loads
molds only up to this total weight.
clearance_target_mm: Target mold-to-mold clearance (default 300).
clearance_min_mm: Minimum acceptable clearance (default 150).
allow_overhang_within_envelope: Allow every mold shape to extend
past the spider edge while its complete active shape remains
inside the rotation envelope. Defaults to false.
include_layout: Include request-relative mold placements. Use with
response_api v1/v2/v3 to select the placement heading dialect.
display_unit: 'mm' (default) or 'in'. Canonical result fields remain
millimetres; 'in' adds a display projection rounded to 0.00001 in.
response_api: Public placement dialect. Defaults to
rotospider.layout-check.v1; request rotospider.layout-check.v2
for exact four-heading orient keys when layouts are included.
Returns a summary sentence plus per-arm results: feasible, placed vs
requested counts (per mold type when available), selected riser height,
spider utilization, center-of-gravity offset, achieved clearance, and
the engine's reason when molds do not fit.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| molds | array | yes | |
| machine | string | no | |
| arm_type | string | no | |
| spider_diameter_mm | any | no | |
| envelope_diameter_mm | any | no | |
| dead_height_mm | any | no | |
| offset_spider_y_mm | any | no | |
| offset_horz_diameter_mm | any | no | |
| riser_heights_mm | any | no | |
| spider_diameter_in | any | no | |
| envelope_diameter_in | any | no | |
| dead_height_in | any | no | |
| offset_spider_y_in | any | no | |
| offset_horz_diameter_in | any | no | |
| riser_heights_in | any | no | |
| max_load_weight_kg | number | no | |
| clearance_target_mm | any | no | |
| clearance_min_mm | any | no | |
| allow_overhang_within_envelope | boolean | no | |
| include_layout | boolean | no | |
| clearance_target_in | any | no | |
| clearance_min_in | any | no | |
| display_unit | string | no | |
| response_api | string | no |
Raw JSON schema
{
"properties": {
"molds": {
"items": {
"additionalProperties": true,
"type": "object"
},
"title": "Molds",
"type": "array"
},
"machine": {
"default": "",
"title": "Machine",
"type": "string"
},
"arm_type": {
"default": "",
"title": "Arm Type",
"type": "string"
},
"spider_diameter_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Spider Diameter Mm"
},
"envelope_diameter_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Envelope Diameter Mm"
},
"dead_height_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Dead Height Mm"
},
"offset_spider_y_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Offset Spider Y Mm"
},
"offset_horz_diameter_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Offset Horz Diameter Mm"
},
"riser_heights_mm": {
"anyOf": [
{
"items": {
"type": "number"
},
"type": "array"
},
{
"type": "null"
}
],
"default": null,
"title": "Riser Heights Mm"
},
"spider_diameter_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Spider Diameter In"
},
"envelope_diameter_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Envelope Diameter In"
},
"dead_height_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Dead Height In"
},
"offset_spider_y_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Offset Spider Y In"
},
"offset_horz_diameter_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Offset Horz Diameter In"
},
"riser_heights_in": {
"anyOf": [
{
"items": {
"type": "number"
},
"type": "array"
},
{
"type": "null"
}
],
"default": null,
"title": "Riser Heights In"
},
"max_load_weight_kg": {
"default": 0,
"title": "Max Load Weight Kg",
"type": "number"
},
"clearance_target_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Clearance Target Mm"
},
"clearance_min_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Clearance Min Mm"
},
"allow_overhang_within_envelope": {
"default": false,
"title": "Allow Overhang Within Envelope",
"type": "boolean"
},
"include_layout": {
"default": false,
"title": "Include Layout",
"type": "boolean"
},
"clearance_target_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Clearance Target In"
},
"clearance_min_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Clearance Min In"
},
"display_unit": {
"default": "mm",
"title": "Display Unit",
"type": "string"
},
"response_api": {
"default": "rotospider.layout-check.v1",
"title": "Response Api",
"type": "string"
}
},
"required": [
"molds"
],
"title": "check_mold_layoutArguments",
"type": "object"
}