{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.hammer","code":"thing-q25294","url":"https://ver.cy/models/thing/q25294/","name":"hammer","alternateNames":["marrão","bush hammer","slag hammer","Joiners' hammer","tuning wrench","lump hammer","upholstery hammer","crab hammer","tinker hammer","penalty hammer","cobbler's hammer","nail hammer"],"kind":"thing","status":"published","version":"0.2.0-wave.2","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A manually operated or powered tool designed to deliver impact to an object, used for tasks such as driving nails, shaping metal, breaking stone and fitting parts.","purpose":"Let an agent explain hammer types and their uses, support choosing and using hammers safely, describe materials and manufacture, and describe the hammer in history and culture.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Impact tool","Head and handle","Many types","Ancient origin"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What hammers are.","layers":[{"id":"types","name":"Types","description":"Types.","findings":[{"id":"types-finding","name":"Types","description":"Types.","questions":[{"text":"What types of hammer exist, and which task is each designed for?","kind":"definition"},{"text":"Which entry fits a specific hammer type?","kind":"action"}]}]},{"id":"anatomy","name":"Anatomy","description":"Parts and materials.","findings":[{"id":"anatomy-finding","name":"Anatomy","description":"Anatomy.","questions":[{"text":"How are hammer heads and handles made, and what materials and weights are used?","kind":"definition"},{"text":"Which entry fits tool manufacturing?","kind":"action"}]}]}]},{"id":"use","name":"Use","description":"Choosing and using.","layers":[{"id":"choose","name":"Choose","description":"Choosing a hammer.","findings":[{"id":"choose-finding","name":"Choose","description":"Choosing.","questions":[{"text":"Which hammer suits this task, and what weight and handle are appropriate?","kind":"action"},{"text":"Which entry fits a specific trade?","kind":"action"}]}]},{"id":"safety","name":"Safety","description":"Safe use.","findings":[{"id":"safety-finding","name":"Safety","description":"Safety.","questions":[{"text":"How are hammers used safely, inspected and maintained, according to safety guidance?","kind":"provenance"},{"text":"Is an injury present now, needing first aid?","kind":"boundary"}]}]}]},{"id":"trades","name":"Trades","description":"Hammers in trades.","layers":[{"id":"metal","name":"Metal","description":"Metalwork and masonry.","findings":[{"id":"metal-finding","name":"Metal","description":"Metalwork.","questions":[{"text":"How are hammers used in blacksmithing, sheet metal work and stone masonry?","kind":"provenance"},{"text":"Which entry fits blacksmithing?","kind":"action"}]}]},{"id":"special","name":"Special","description":"Specialised hammers.","findings":[{"id":"special-finding","name":"Special","description":"Specialised.","questions":[{"text":"How are geological, tuning, piano and other specialised hammers used?","kind":"provenance"},{"text":"Which entry fits a specific specialised use?","kind":"action"}]}]}]},{"id":"learn","name":"Learn","description":"History and culture.","layers":[{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How did hammers develop from stone tools to modern designs?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"culture","name":"Culture","description":"Symbolism.","findings":[{"id":"culture-finding","name":"Culture","description":"Culture.","questions":[{"text":"What does the hammer symbolise in mythology, politics and culture, with attribution?","kind":"provenance"},{"text":"Which misconceptions arise?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Choose the right hammer for a task and recommend eye protection.","Recommend compliance with applicable tool condition and safety requirements.","Operate a hammer in robotic work it is authorized for."],"mustNot":["Use a hammer with a loose head or damaged handle.","Strike hardened steel with a hammer not made for it, which can throw chips.","Swing a hammer near people without warning.","Assist anyone in using a hammer as a weapon."],"requiresHuman":["Demolition or breaking work near other people requires human oversight."]},"ethics":{"considerations":["Hammers cause eye and hand injuries and can be used as weapons.","Proper tools protect workers."],"affectedParties":["Users and bystanders","Workers","Learners"]},"owners":{"steward":"The person who owns or uses it.","roles":[],"masterSystems":[]},"relations":[{"target":"Q30058680","type":"parent","note":"registry parent class"},{"target":"impact tool","type":"related","note":"category"},{"target":"blacksmith","type":"related","note":"a trade using hammers"},{"target":"technician","type":"related","note":"workers using tools"},{"target":"spoon","type":"related","note":"another hand implement entry"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.hammer","Wikidata: Q25294 (https://www.wikidata.org/wiki/Q25294)"]},"properties":{"applicability":"required","items":["Total mass:  Kilograms - The assembled tool is weighed on a scale because mass varies substantially with hammer type and intended work.","Overall length:  Millimetres - Length is measured from the handle end to the furthest point of the head along the tool's main axis.","Striking face hardness:  Hardness scale appropriate to the material - Face hardness is measured with a material-appropriate indentation test because steel, wood and elastomer faces require different methods."]},"recognition":{"applicability":"required","items":["Weighted head on a handle","Delivers impact","A mallet has a soft head; an axe cuts; a power hammer is a machine","A head of metal, wood or other material on a handle."]},"capabilities":{"applicability":"required","items":["explain types and uses","support choice and safe use","describe materials","describe history and culture"]},"hazards":{"applicability":"required","items":["Head detachment and handle failure","Eye and hand injuries","Using the wrong hammer for the task"]},"interfaces":{"applicability":"required","items":["Hand tool safety standards","Workplace safety rules","Product standards for tool heads and handles"]},"context":{"applicability":"required","items":["Impact hand tool with head and handle.","claw and framing hammers","ball-peen and cross-peen hammers","club, lump and sledge hammers","mallets and soft-faced hammers","specialised hammers such as bush, slag, geological and tuning hammers"]}},"sources":[{"title":"Wikidata item Q25294: hammer","url":"https://www.wikidata.org/wiki/Q25294","note":"identity and sense of the item"},{"title":"Wikipedia: Hammer","url":"https://en.wikipedia.org/wiki/Hammer","note":"general description of the item"}],"openQuestions":["Should each hammer type be a separate entry?","How should tool standards be linked?","How should trades be linked?"],"resources":{"spec":"/models/things/publications/thing-q25294/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q25294/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T02:29:09Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-08T18:54:38+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}