Z-axis changes while printing

[duyle 0]

Hello all experts!

I'm using a S5. I found that the Z-axis is changing while printing. This may be due to the auto bed leveling function. Before all printings, it always perform a matrix of point height and usually the thickness of glue that we use is not unique so it does an offset if needed.

But this cause a problem. The first layer thickness is not uniform randomly (attached pictures). This only matter when printing big parts.

Please anyone can help me this case.

[Smithy 1,135]

The glue stick should not be the problem, but follow this advice to get an even layer:

https://www.youtube.com/watch?v=i8PGtv0ueGg

 

[JTMD 13]

I had a very similar experience.  Bad Glass plate right out of the box.  New plate fixed it.

 

[JTMD 13]

It looks like you're having the problem in the same area of the build surface..   just a suggestion:  try making a small test part and place it in Cura right in the area where you're having the problem.  That'll help find the root cause.

[duyle 0]

Hi JTMD,

But the location of problem is random as you can see in the 2 pictures.

I will find another glass bed.

[JTMD 13]

8 hours ago, duyle said:

Hi JTMD,

But the location of problem is random as you can see in the 2 pictures.

I will find another glass bed.

it's not *exactly* random..  mine was the same way..  not always exactly in the same spot but usually in the same general area.   No problems after the glass change.