I stopped letting my 3D printer phone home, and the privacy gain was worth every minute of setup

For the past few years, I've been drawn to Bambu Lab's 3D printers due to their convenient ecosystem, which includes cloud services. However, I recently realized that entrusting my prints to the company's servers made me uneasy, particularly when dealing with bespoke or client-specific designs. To alleviate these concerns, I switched my 3D printer to operate solely within my local network (LAN) and control it from my personal computer.

The transition to LAN mode is surprisingly seamless, as the workflow remains largely unchanged. Instead of my 3D printer sending sliced files to Bambu Lab's servers, the files now travel directly from my computer to the printer. This adjustment has brought about significant privacy benefits, as my sensitive print files no longer traverse offshore servers. Moreover, I can confidently print files under specific rights, knowing that they remain under my control.

There are, however, a few limitations to consider. The Bambu Handy app, which I occasionally use for convenience, becomes useless in LAN-only mode. Remote access features, like checking print progress via webcam or estimating remaining print time, also become unavailable. These features rely on Bambu Lab's cloud services, which are now redundant in my setup. Additionally, I must manually check for software and firmware updates, a process that was previously streamlined through the cloud.

Despite these minor inconveniences, the shift to LAN mode has proven worthwhile. I've gained enhanced privacy and the comfort of knowing that my print files are transferred directly from my computer to the 3D printer, without any third-party involvement. While I occasionally revert to online mode for specific tasks, such as printing publicly available files, the benefits of LAN-only mode far outweigh the occasional inconvenience.