{"sources":[{"id":"3dfuel-com--pro-pla-filament-castle-gray-1-75mm:quick:source:0:listing","type":"listing","url":"https://3dfuel.myshopify.com/products.json","retrieval_at":"2026-09-25T19:01:04.621Z","source_hash":"e78b9cd68571fce72da479ffb6dd30d2dbdd63b6dd1c1e961c3ddecbf737876a","access_verdict":"permitted","robots_result":"allow"}],"summaries":[],"facts":[{"id":"3dfuel-com--pro-pla-filament-castle-gray-1-75mm:pack:1:3dfuel-com--pro-pla-filament-castle-gray-1-75mm:quick:source:0:listing:fact:0","source_id":"3dfuel-com--pro-pla-filament-castle-gray-1-75mm:quick:source:0:listing","field":"Material","ordinal":0,"value_number":null,"unit":null,"value_text":"Made in the US from NatureWorks 3D870 Ingeo PLA.","original_value":"Manufactured in the US from genuine NatureWorks™ 3D870 Ingeo PLA","confidence":1,"citation":{"lineage_tier":"T1","artefact_id":"3dfuel-com--pro-pla-filament-castle-gray-1-75mm:quick:source:0:listing:artefact:e78b9cd68571fce72da479ffb6dd30d2dbdd63b6dd1c1e961c3ddecbf737876a","start":800,"end":864,"summary_id":null,"excerpt_id":null,"span_sha256":"b1e81c3b007f9afefa889cc6e267b92f40ae011ead291df9604f5dff5048c6e3","source_locator":"characters 800 to 864 of the retained text"}},{"id":"3dfuel-com--pro-pla-filament-castle-gray-1-75mm:pack:1:3dfuel-com--pro-pla-filament-castle-gray-1-75mm:quick:source:0:listing:fact:1","source_id":"3dfuel-com--pro-pla-filament-castle-gray-1-75mm:quick:source:0:listing","field":"Available sizes","ordinal":1,"value_number":null,"unit":null,"value_text":"Castle Gray 1.75 mm filament is offered on 1 kg and 4 kg spools.","original_value":"Tough Pro PLA+ / 1kg 1.75mm Spool / Castle Gray — Tough Pro PLA+ / 4kg 1.75mm Spool / Castle Gray","confidence":1,"citation":{"lineage_tier":"T1","artefact_id":"3dfuel-com--pro-pla-filament-castle-gray-1-75mm:quick:source:0:listing:artefact:e78b9cd68571fce72da479ffb6dd30d2dbdd63b6dd1c1e961c3ddecbf737876a","start":338,"end":435,"summary_id":null,"excerpt_id":null,"span_sha256":"ed00c1007b3c34c82897ae018c808a51f1245461656861855c70931cf88f66d9","source_locator":"characters 338 to 435 of the retained text"}},{"id":"3dfuel-com--pro-pla-filament-castle-gray-1-75mm:pack:1:3dfuel-com--pro-pla-filament-castle-gray-1-75mm:quick:source:0:listing:fact:2","source_id":"3dfuel-com--pro-pla-filament-castle-gray-1-75mm:quick:source:0:listing","field":"Test conditions","ordinal":2,"value_number":null,"unit":null,"value_text":"The stated impact test used parts printed on a Bambu Lab X1C at 0.2 mm layer height without annealing and a 1 kg drop-test weight.","original_value":"Test parts were 3D printed on a Bambu Lab X1C at 0.2mm layer height with no annealing . 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