{ "version": "2026-10-20", "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.", "slug": "insulating-firebrick", "name": "Insulating firebrick 230 × 114 × 64 mm (9 × 4.5 × 2.5 in)", "kind": "hardware", "category": "Stirling engines", "group": "Heat & regenerator", "year": null, "question": "What are the dimensions of an insulating firebrick?", "tags": [ "firebrick", "insulation", "heat", "burner", "stirling", "long earth society" ], "aliases": [ "firebrick dimensions", "insulating firebrick size", "ifb 23 dimensions", "fire brick mm", "firebrick stl" ], "overall_mm": { "length": null, "width": null, "height": null }, "official_cad": false, "xem_status": "free-files", "les": true, "free_files": 1, "url": "https://xemstudio.com/objects/insulating-firebrick/", "sheet_txt": "https://xemstudio.com/objects/insulating-firebrick/sheet.txt", "sheet": { "basis": "Standard straight brick 9 × 4.5 × 2.5 in (230 × 114 × 64 mm), IFB 23 grade rated 1260 °C", "overall_mm": { "length": null, "width": null, "height": null }, "notes": [ "A standard straight insulating firebrick is 230 × 114 × 64 mm (9 × 4.5 × 2.5 in); the file is a plain box at that size.", "IFB 23 grade is rated to 1260 °C.", "I use one under the burner on my engines." ], "table": { "columns": [ "brick", "length_mm", "width_mm", "height_mm", "max_temp_c" ], "rows": [ [ "IFB straight", 230, 114, 64, 1260 ] ] } }, "sheet_text": "Insulating firebrick 230 × 114 × 64 mm (9 × 4.5 × 2.5 in) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/insulating-firebrick/ (CC BY 4.0)\nBasis: Standard straight brick 9 × 4.5 × 2.5 in (230 × 114 × 64 mm), IFB 23 grade rated 1260 °C\nCatalog version: 2026-10-20\n\nSizes: see table below\n- A standard straight insulating firebrick is 230 × 114 × 64 mm (9 × 4.5 × 2.5 in); the file is a plain box at that size.\n- IFB 23 grade is rated to 1260 °C.\n- I use one under the burner on my engines.\n\nbrick length_mm width_mm height_mm max_temp_c\nIFB straight 230 114 64 1260\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Wikipedia: Mesh (scale) — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Mesh_(scale)\n- Wikipedia: Regenerative heat exchanger — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Regenerative_heat_exchanger\n- Wikipedia: Steel wool — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Steel_wool\n- McMaster-Carr: Wire cloth (free STEP per part, for your own design use; no redistribution) — STEP, PDF — McMaster-Carr site terms [verify license at link] — https://www.mcmaster.com/products/wire-cloth/\n- Long Earth Society: Engine and rig builds — web, video — LES site — https://longearthsociety.com/engineering/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/insulating-firebrick/index.json\nAPI: https://xemstudio.com/api/geometry?object=insulating-firebrick\n", "sources": [ { "publisher": "Wikipedia", "title": "Mesh (scale)", "url": "https://en.wikipedia.org/wiki/Mesh_(scale)", "formats": [ "web" ], "license": "CC BY-SA 4.0 (text)", "license_verified": true, "hosted": false }, { "publisher": "Wikipedia", "title": "Regenerative heat exchanger", "url": "https://en.wikipedia.org/wiki/Regenerative_heat_exchanger", "formats": [ "web" ], "license": "CC BY-SA 4.0 (text)", "license_verified": true, "hosted": false }, { "publisher": "Wikipedia", "title": "Steel wool", "url": "https://en.wikipedia.org/wiki/Steel_wool", "formats": [ "web" ], "license": "CC BY-SA 4.0 (text)", "license_verified": true, "hosted": false }, { "publisher": "McMaster-Carr", "title": "Wire cloth (free STEP per part, for your own design use; no redistribution)", "url": "https://www.mcmaster.com/products/wire-cloth/", "formats": [ "STEP", "PDF" ], "license": "McMaster-Carr site terms", "license_verified": false, "hosted": false }, { "publisher": "Long Earth Society", "title": "Engine and rig builds", "url": "https://longearthsociety.com/engineering/", "formats": [ "web", "video" ], "license": "LES site", "license_verified": true, "hosted": false } ], "xem": { "status": "free-files", "sheet_free": true, "mesh_price_usd": null, "step_price_usd": null, "tolerance_mm": null }, "related": [ "ceramic-standoff", "tea-light-candles", "regenerator-cage" ], "fits": [ { "role": "Connects to", "items": [ { "slug": "tea-light-candles", "why": "the burner sits on the brick" } ] }, { "role": "Also needed", "items": [ { "slug": "ceramic-standoff", "why": "hot-end spacing above the base" } ] } ], "dimensions": "exact (nominal, no printing tolerance)", "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.", "mating": [], "faq": [ { "q": "What size is a firebrick?", "a": "A standard straight is 230 × 114 × 64 mm (9 × 4.5 × 2.5 in)." }, { "q": "How hot can insulating firebrick get?", "a": "IFB 23 is rated to 1260 °C." } ], "files_license": null, "offers": [ { "file": "firebrick-230x114x64", "formats": [ "step", "stl" ], "price_usd": 0, "license": "CC BY 4.0 (Xem Studio)", "step": "https://xemstudio.com/files/hardware/regenerator-and-heat-materials/firebrick-230x114x64.step", "stl": "https://xemstudio.com/files/hardware/regenerator-and-heat-materials/firebrick-230x114x64.stl", "note": "insulating firebrick (IFB) 9 × 4.5 × 2.5 in: 230 × 114 × 64 mm" } ], "markdown": "https://xemstudio.com/objects/insulating-firebrick/index.md" }