Now you can use 3D printed parts to connect two aluminum profiles. This hinge has a similar effect to metal hinge products, and you can use it to do more things

现在你可以使用3D打印的零件来连接两个铝型材，这个铰链使用效果和金属的铰链制品差不多，你可以使用它来做更多的事情

March 21, 2024 minor update
Beautify the original plan with more reasonable chamfering, now it can be opened and closed at a larger angle.
Adding an indirect hinge scheme at the end, the current problem is still quite obvious, with insufficient strength and a large amount of support, making it difficult to disassemble.

2024年3月21日 小更新

美化原方案，更合理的倒角，现在可以开合更大的角度。
增加一个端头间接的铰链方案，目前问题还比较明显，强度貌似不足，支撑量较大，很难拆。