{"product_id":"functional-artillery-canon-toy","title":"Functional Artillery Canon Toy","description":"\u003cp\u003eThis is a fun little artillery project that I have been working on.  You get to build a working canon, with functioning height adjustment. With shells that you load into the breech and then fire!  Good luck!\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThis is assembled using m3 screws, and m4 screws a couple of springs, and that's it.  I opted for the screws for the aesthetics and the ease of assembly.  I built this around using springs from maker world, specifically this one: 0.6x8x40 mm (5PCS) - BB017 however the performance if this spring leaves a bit to be desired. Instead I used one from a bulk spring kit I found at a hardware store.  It's most similar to a 1x10x35MM spring available on amazon.  The heavier the spring you can get to fit the better range you will get!\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eDesign by Zoinac on MakerWorld (license: BY).\u003c\/p\u003e","brand":"Mymadmanlab","offers":[{"title":"Default Title","offer_id":67391450022192,"sku":null,"price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/0809\/5280\/files\/0_b3fc8894-0aa8-4a12-a7c7-75fc1dc67835.png?v=1784751656","url":"https:\/\/mymadmanlab.com\/products\/functional-artillery-canon-toy","provider":"Mymadmanlab.com","version":"1.0","type":"link"}