Roller shutter mechanism

Here's the updated translation with your addition included: Hey, I'm sharing this for the curious and those who like to tinker. The roller blind mechanism isn't a finished project—more like a beta or MR.001 version. I'm a bit short on time to rework and print everything, but it's a fairly simple model for your own tweaks. It's just missing the tube and a supporting mechanism that allows the tube to rotate, so basically a simple cap/endpiece. On the part labeled PortC, you need to attach small springs, and on PortD, there's a missing rectangular protrusion—together, they will function like a bearing. When I find time, I'll try to update the model, but for now, feel free to support, create, and improve it! May the Force be with you