{"product_id":"wheels-and-axles-without-a-lathe","title":"Wheels \u0026 Axles Without a Lathe","description":"\u003cp\u003eA wheel is not a circle. It is a disc whose rim is everywhere the same distance from a hole. Those are two separate requirements, and most methods online fix one and ignore the other.\u003c\/p\u003e\u003ch3\u003eWhat is inside\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRoundness against concentricity, and why an offset of e produces twice that in runout\u003c\/li\u003e\n\u003cli\u003eThe one rule that organises everything: the hole is the datum\u003c\/li\u003e\n\u003cli\u003eFour methods compared — hole saw, pivot jig, router trammel, truing jig\u003c\/li\u003e\n\u003cli\u003eWhy a hole saw never gives you the diameter printed on it, and how to compute what it does give\u003c\/li\u003e\n\u003cli\u003eBuilding and setting a pivot jig, including why you correct by half the error\u003c\/li\u003e\n\u003cli\u003eTruing a rough wheel true, and measuring runout with a pencil instead of a dial gauge\u003c\/li\u003e\n\u003cli\u003eHow four wheels stack their errors into a rocking toy, and three ways to stop it\u003c\/li\u003e\n\u003cli\u003eA proportioned wheel from one ratio pair, with a six-size table\u003c\/li\u003e\n\u003cli\u003eRunning clearance computed from seasonal wood movement rather than guessed\u003c\/li\u003e\n\u003cli\u003eMaking round axles with a dowel plate, and when a brass bushing earns its place\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFormat\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e7 pages, A4, PDF\u003c\/li\u003e\n\u003cli\u003eDelivered as an instant download after purchase\u003c\/li\u003e\n\u003cli\u003ePrint at 100% with scaling off — several drawings are reproduced at true size\u003c\/li\u003e\n\u003cli\u003eNo physical item is shipped\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePlease note\u003c\/h3\u003e\u003cp\u003eThis is a design guide, not legal advice, and it does not substitute for testing. Regulatory figures are cited to their source so you can verify them against the current text.\u003c\/p\u003e","brand":"Wooden Fun Toys","offers":[{"title":"Default Title","offer_id":48931224584345,"sku":"WFT-03","price":19.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5202\/7033\/files\/03-wheels-and-axles.png?v=1787586887","url":"https:\/\/woodenfuntoys.store\/products\/wheels-and-axles-without-a-lathe","provider":"Wooden fun toys","version":"1.0","type":"link"}