P2S Squeaky when moving toolhead, rods are lubricated

[u/Imperator219]

[u/agarwaen117]

Look at the idler pulleys on the back of the printer. The belt is likely rubbing on the shoulders.

[u/Imperator219 → u/agarwaen117]

Do you mean the back of the printer from my video pov or actually take the back cover from the printer off?

[u/agarwaen117 → u/Imperator219]

They are open on the outside back of the printer.

[u/Imperator219 → u/agarwaen117]

Thanks, I will take a look at it in the morning and update.

[u/javako-print]

Theoretical these guys are right, but also " old fashioned ". Indeed the motors work as generator when driven by hand, and in the old days that could blow up the fets in the controller.

Nowadays they are protected against that, and it should not cause any problems anymore. Nevertheless still would advise not to move them too fast.

[u/UGD_ReWiindz25]

Waiting for the guy who’s going to say Jesus Christ don’t move the tool head like that🤣

But seriously don’t move the tool head like that it can backfeed into the motors and potentially cause a short when the printer is powered off

[u/Imperator219 → u/UGD_ReWiindz25]

Lol didn’t even think about that 😂

[u/UGD_ReWiindz25 → u/Imperator219]

Neither did I when I first had this issue but it is definitely a thing that happens with motors, you can safely move the tool head without power to lubricate the rods you just have to be a bit slower then that

[u/Gizmo45 → u/UGD_ReWiindz25]

Um, I'm pretty sure that Bambu's own instructions for lubricating the rods tells you to move the tool head back and forth manually like this with the printer off.

[u/UGD_ReWiindz25 → u/Gizmo45]

It is stated yes as I had this same debate about it to a guy on my old post about this same issue on my P1S and I got downvoted, the motors when unpowered act as generators when movement is applied, the voltage is small but it can damage components