As a loyal AC Milan fan for over thirty years, I've always wanted a badge that I could wear on my chest or attach to my bag. However, most badges on the market need to be pinned on, requiring piercing through clothes or bags, which could damage my items with waterproof layers. After getting a 3D printer, I decided to bring my idea to life: creating a badge with a magnetic backplate. This design uses rare-earth magnets to secure the badge without damaging the fabric. This method proved very successful, holding firmly on T-shirts or windbreakers. While it's slightly less stable on thicker fleece garments, it's still sufficiently secure without shifting unless forcefully moved.

• After printing, you need to install 12 rare-earth magnets, each with a diameter of 6mm and a thickness of 2mm.
• When installing the magnets, glue is needed. I used Eryo 5800.

作为AC米兰的忠实球迷三十多年，我一直想要一个能够佩戴在胸前或附在包上的徽章。然而，市面上的徽章大多需要用针来固定，这意味着要穿透衣物或包包，可能会损坏我那些具有防水层的物品。拥有3D打印机后，我决定实现自己的一个想法：设计一个徽章和一个带磁铁的背板，通过稀土磁铁的吸附力来固定徽章，避免损伤衣物。这个方法非常成功，即使是在T恤或防风衣上也非常稳固。对于较厚的抓绒衣物，虽然稳定性稍差，但也足够使用了，除非用力推移，徽章基本不会移位。

• 打印完后需要安装12 个直径6mm、厚度2mm的稀土磁铁。
• 磁铁安装时要用胶水，我用的是 Eryo 5800。