{"product_id":"split-expansion-anchor","title":"Split Expansion Anchor","description":"\u003cp\u003eThe \u003cstrong\u003eSplit Expansion Anchor\u003c\/strong\u003e is a removable mounting component designed for the Broinwood CNC Spoilboard System.\u003c\/p\u003e\n\u003cp\u003eIt installs into a machined pocket in an MDF spoilboard and uses a \u003cstrong\u003eThreaded Insert\u003c\/strong\u003e to expand the two halves of the anchor against the pocket walls. Once expanded, it creates a secure \u003cstrong\u003e1\/4\"-20 threaded mounting point\u003c\/strong\u003e for Low-Profile Hold-Down Clamps and other compatible workholding setups.\u003c\/p\u003e\n\u003cp\u003eThe anchor can be removed, repositioned, and reused anywhere within the same spoilboard grid.\u003c\/p\u003e\n\u003ch3\u003eHow to Install\u003c\/h3\u003e\n\u003cp\u003eThe Split Expansion Anchor consists of \u003cstrong\u003etwo different halves\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne half has \u003cstrong\u003etwo small holes on the top surface\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe matching half has a \u003cstrong\u003eflat top with no holes\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTogether, these two pieces form one complete Split Expansion Anchor.\u003c\/p\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003eInsert both halves into a properly sized spoilboard pocket.\u003c\/li\u003e\n\u003cli\u003eInstall the \u003cstrong\u003eThreaded Insert\u003c\/strong\u003e into the center of the anchor.\u003c\/li\u003e\n\u003cli\u003eTighten the Threaded Insert using an Allen wrench.\u003c\/li\u003e\n\u003cli\u003eAs the Threaded Insert is tightened, the two halves expand outward and grip the walls of the MDF pocket.\u003c\/li\u003e\n\u003cli\u003eContinue tightening until there is a gap of about \u003cstrong\u003e1 mm between the two halves on both sides\u003c\/strong\u003e and the head of the Threaded Insert sits \u003cstrong\u003eflush with or slightly below the top surface of the anchor\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThese are the easiest visual indicators that the Split Expansion Anchor has been properly installed and expanded.\u003c\/p\u003e\n\u003cp\u003eExcessive torque is not required. If using a drill\/driver, use a \u003cstrong\u003elow clutch setting\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow to Remove\u003c\/h3\u003e\n\u003cp\u003eBefore removing the Split Expansion Anchor, \u003cstrong\u003ecompletely unscrew and remove the Threaded Insert\u003c\/strong\u003e. This releases the expansion pressure against the walls of the pocket.\u003c\/p\u003e\n\u003cp\u003eIf the anchor remains firmly seated in the MDF:\u003c\/p\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003eInsert the removal tool into one of the \u003cstrong\u003etwo small holes on the top of the anchor\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eGently move that half away from the pocket wall to release it from the MDF.\u003c\/li\u003e\n\u003cli\u003eInsert the removal tool through the center of the anchor.\u003c\/li\u003e\n\u003cli\u003eEngage the \u003cstrong\u003eextraction slot located at the bottom\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003ePull upward to remove the anchor from the spoilboard.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe Split Expansion Anchor can then be installed in another pocket and reused.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 16 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended nominal pocket diameter:\u003c\/strong\u003e 25.3 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended pocket depth:\u003c\/strong\u003e 17 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\"-20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended bolt relief hole:\u003c\/strong\u003e 8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Removable and reusable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for:\u003c\/strong\u003e MDF CNC spoilboards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufactured in:\u003c\/strong\u003e USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e25.3 mm pocket diameter is a recommended nominal size, not an absolute requirement\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eA slightly larger pocket is perfectly acceptable as long as the Guide Pin fits snugly without excessive play. The actual pocket diameter may vary depending on your CNC machine, tooling, calibration, and cutting accuracy.\u003c\/p\u003e\n\u003cp\u003eBefore machining the complete spoilboard, I recommend starting with a \u003cstrong\u003e25.0 mm test pocket\u003c\/strong\u003e and checking the fit with a Broinwood Guide Pin.\u003c\/p\u003e\n\u003cp\u003eIf the pocket is too tight, increase the diameter gradually in \u003cstrong\u003e0.1 mm increments\u003c\/strong\u003e until the correct fit is achieved.\u003c\/p\u003e\n\u003cp\u003eThe Guide Pin should fit snugly, but it should still be possible to insert and remove it by hand without excessive force.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe fit is more important than the exact diameter.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eStrength\u003c\/h3\u003e\n\u003cp\u003eThe Split Expansion Anchor has been tested for pull-out loads of \u003cstrong\u003eup to 120 kg (265 lb) under my test conditions\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is a test result, \u003cstrong\u003enot a certified or guaranteed working-load rating\u003c\/strong\u003e. Actual holding strength depends on the MDF, pocket dimensions, machining accuracy, installation, material condition, and other factors.\u003c\/p\u003e\n\u003cp\u003eThe anchor is designed to act as a \u003cstrong\u003ereplaceable sacrificial component if excessive torque is applied\u003c\/strong\u003e. Excessive tightening should still always be avoided.\u003c\/p\u003e","brand":"BroinwooD","offers":[{"title":"Default Title","offer_id":52478613094690,"sku":null,"price":1.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0247\/1546\/0683\/files\/512E26C5-456D-442F-B3FA-416F63861883.jpg?v=1788563494","url":"https:\/\/broinwood.com\/products\/split-expansion-anchor","provider":"CUSTOM CUTTING BOARDS BY BROINWOOD","version":"1.0","type":"link"}