{"product_id":"quiet-ball-whistle","title":"Quiet Ball Whistle","description":"\u003cp\u003eReally loud whistles are great when you need a really loud whistle, but would you really want to give one to your kid? This much quieter toy produces a soft and oddly satisfying thwumpa-wumpa sound as the ball spins around the track. Just print and pop one or two or three (I like the sound of two) balls – 6mm dia. Airsoft BB's -- into the track through the gap in the top. And don't worry - it is impossible to suck the balls back up through the tube you blow on.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe model has built-in mouse-ear brims around the ball opening that you should remove with a hobby knife after printing. I strongly recommend using the provided 3MF file as it has special bridging and seam settings that avoid lumps on the inside of the tube that are impossible to remove.\u003c\/p\u003e\u003cp\u003eDesign by LoboCNC on MakerWorld (license: BY-SA).\u003c\/p\u003e","brand":"Mymadmanlab","offers":[{"title":"Default Title","offer_id":67368196899120,"sku":null,"price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/0809\/5280\/files\/0_1cc81671-6e16-436a-b388-03cd18c5d755.png?v=1784025901","url":"https:\/\/mymadmanlab.com\/products\/quiet-ball-whistle","provider":"Mymadmanlab.com","version":"1.0","type":"link"}