{"product_id":"neodymium-disc-magnets-4x3mm","title":"4mm x 3mm N42 Neodymium Disc Magnets","description":"\u003cp\u003eThese 4 x 3 mm N42 neodymium disc magnets sit at the top of the 4 mm size ladder, providing the highest holding force in that diameter. They are axially magnetised for flat-face attraction and protected by a NiCuNi coating for normal indoor modelling and craft use.\u003c\/p\u003e\n\u003cp\u003eChoose this format for heavier subassemblies, turrets, substantial weapon fittings and basing jobs where a 4 mm footprint is already established and the part has enough depth for a longer magnet. Its calculated, zero-gap pull reference is 450 g, while the sideways shear estimate is approximately 60 g. This makes it the option for components that should stay seated confidently during handling, rather than for thin panels or shallow shells.\u003c\/p\u003e\n\u003cp\u003ePrepare the joint with a 4 mm drill and a 3.2 mm-deep recess. A 4.1 mm hole is the recommended starting point in a 3D-printed component. Check the available wall depth before drilling, keep the socket square and test polarity against the mating side before adding CA glue. The stronger joint can expose a weak adhesive bond, so allow the glue to cure fully before separating the faces. Packs contain 1, 10, 25, 50 or 100 magnets.\u003c\/p\u003e","brand":"Hobby Heaven","offers":[{"title":"1","offer_id":37686892101821,"sku":"MAG\/D4X3\/1","price":2.39,"currency_code":"USD","in_stock":true},{"title":"10","offer_id":37686892134589,"sku":"MAG\/D4X3\/10","price":2.86,"currency_code":"USD","in_stock":true},{"title":"25","offer_id":37686892167357,"sku":"MAG\/D4X3\/25","price":3.42,"currency_code":"USD","in_stock":true},{"title":"50","offer_id":37686892200125,"sku":"MAG\/D4X3\/50","price":4.58,"currency_code":"USD","in_stock":true},{"title":"100","offer_id":37686892232893,"sku":"MAG\/D4X3\/100","price":6.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/9583\/4503\/files\/4x3mmHero1.jpg?v=1785936846","url":"https:\/\/hobbyheaven.org\/en-int\/products\/neodymium-disc-magnets-4x3mm","provider":"Hobby Heaven","version":"1.0","type":"link"}