Solution for U1 moving z-axis making a creaking sound

When the Z-axis of the U1 moves to around 190 and then continues downward, a strange noise occurs, resembling a friction sound, which can be heard every time after printing when moving downward. I found that this noise is caused by the heated bed cable rubbing against the casing.

The solution is to apply a layer of Teflon tape along the edge, as the tape has a self-lubricating effect, which eliminates the friction noise.

The result is as follows:

IMG_20251228_222333

After testing repeated up-and-down movements of the Z-axis, the abnormal noise has disappeared.

I used Google Translate to present this:

The U1’s Z-axis will make an abnormal noise when it moves down to around
190, like a friction sound, which can be heard every time you move down
after playing. I found the sound of hot bed lines rubbing against the
shell The solution is to put a layer of Teflon tape on the edge, because
the tape has a self-lubricating effect, so it can solve the friction
sound