Rotomolding mold-on-arm layout feasibility: which molds fit on a machine arm/spider, and how.
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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, each with its heading in milli-degrees (angleMilliDeg). display_unit: 'mm' (default) or 'in'. Canonical result fields remain millimetres; 'in' adds a display projection rounded to 0.00001 in. response_api: The answer's version, rotospider.layout-check.v3, the default and the only version. 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.
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, each with its heading in milli-degrees (angleMilliDeg). display_unit: 'mm' (default) or 'in'. Canonical result fields remain millimetres; 'in' adds a display projection rounded to 0.00001 in. response_api: The answer's version, rotospider.layout-check.v3, the default and the only version. 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.
| Argument | Type | Description |
|---|---|---|
| molds* | array | |
| machine | string | |
| arm_type | string | |
| display_unit | string | |
| response_api | string | |
| dead_height_in | any | |
| dead_height_mm | any | |
| include_layout | boolean | |
| clearance_min_in | any | |
| clearance_min_mm | any | |
| riser_heights_in | any | |
| riser_heights_mm | any | |
| max_load_weight_kg | number | |
| offset_spider_y_in | any | |
Relay a user question, bug report, or suggestion to the maintainers. Args: message: The user's feedback text (required). contact: Optional reply address the user volunteers.
| Argument | Type | Description |
|---|---|---|
| contact | string | |
| message* | string |
{
"type": "object",
"title": "send_feedbackArguments",
"required": [
"message"
],
"properties": {
"contact": {
"type": "string",
"title": "Contact",
"default": ""
},
"message": {
"type": "string",
"title": "Message"
}
}
}| offset_spider_y_mm |
| any |
| spider_diameter_in | any |
| spider_diameter_mm | any |
| clearance_target_in | any |
| clearance_target_mm | any |
| envelope_diameter_in | any |
| envelope_diameter_mm | any |
| offset_horz_diameter_in | any |
| offset_horz_diameter_mm | any |
| allow_overhang_within_envelope | boolean |
{
"type": "object",
"title": "check_mold_layoutArguments",
"required": [
"molds"
],
"properties": {
"molds": {
"type": "array",
"items": {
"type": "object",
"additionalProperties": true
},
"title": "Molds"
},
"machine": {
"type": "string",
"title": "Machine",
"default": ""
},
"arm_type": {
"type": "string",
"title": "Arm Type",
"default": ""
},
"display_unit": {
"type": "string",
"title": "Display Unit",
"default": "mm"
},
"response_api": {
"type": "string",
"title": "Response Api",
"default": "rotospider.layout-check.v3"
},
"dead_height_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Dead Height In",
"default": null
},
"dead_height_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Dead Height Mm",
"default": null
},
"include_layout": {
"type": "boolean",
"title": "Include Layout",
"default": false
},
"clearance_min_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Clearance Min In",
"default": null
},
"clearance_min_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Clearance Min Mm",
"default": null
},
"riser_heights_in": {
"anyOf": [
{
"type": "array",
"items": {
"type": "number"
}
},
{
"type": "null"
}
],
"title": "Riser Heights In",
"default": null
},
"riser_heights_mm": {
"anyOf": [
{
"type": "array",
"items": {
"type": "number"
}
},
{
"type": "null"
}
],
"title": "Riser Heights Mm",
"default": null
},
"max_load_weight_kg": {
"type": "number",
"title": "Max Load Weight Kg",
"default": 0
},
"offset_spider_y_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Offset Spider Y In",
"default": null
},
"offset_spider_y_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Offset Spider Y Mm",
"default": null
},
"spider_diameter_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Spider Diameter In",
"default": null
},
"spider_diameter_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Spider Diameter Mm",
"default": null
},
"clearance_target_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Clearance Target In",
"default": null
},
"clearance_target_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Clearance Target Mm",
"default": null
},
"envelope_diameter_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Envelope Diameter In",
"default": null
},
"envelope_diameter_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Envelope Diameter Mm",
"default": null
},
"offset_horz_diameter_in": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Offset Horz Diameter In",
"default": null
},
"offset_horz_diameter_mm": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Offset Horz Diameter Mm",
"default": null
},
"allow_overhang_within_envelope": {
"type": "boolean",
"title": "Allow Overhang Within Envelope",
"default": false
}
}
}