<p><strong>Update: if i press the button "Home" it will correctly posizionate the nozzle above the printing bed, with a gap wide enough to insert a sheet of paper between the nozzle and the surface.
But, and here's the strange thing, if i move the printing bed the z axis motor will rotate causing the nozzle to get too close to the surface, scratching it.</strong></p>

<p>I recently bought my first 3D printer, a Monoprice MP10 Mini. Unfortunately not a nice choice so far.</p>

<p>I calibrated the printer 3 times and after every print the Z axis seems to be completely off.</p>

<p>As a consequence, it scratched the printing bed many times. 
On top of that it seems I can't get a decent print anymore, I don't know how I can describe this problem, so just look at the pictures:</p>

<p><a href="https://i.sstatic.net/zZR0o.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/zZR0o.jpg" alt="enter image description here"></a></p>

<p><a href="https://i.sstatic.net/e454Z.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/e454Z.jpg" alt="enter image description here"></a></p>

CC BY-SA 4.0
2020-05-26T16:07:36.420Z
It looks as if your magnetic print surface is not flat anymore. Could also be a problem with the rollers of the non driven vertical axis.
0scar
CC BY-SA 4.0
2020-05-27T01:41:01.013Z
Put a straight edge on your plate ... agreeing with @0scar ... it isn't flat.
Pᴀᴜʟsᴛᴇʀ2
CC BY-SA 4.0
2020-05-27T07:00:14.013Z
I thought the same, but it's not just that, there's something wrong with the auto leveling too, I updated the original post. Even during auto leveling, the vertical motor is moving, causing the nozzle to get too close to the surface
giliweb.it
<z-axis><bed-leveling>
Monoprice MP10 Mini, can't get a decent print
giliweb.it
# Monoprice MP10 Mini, can't get a decent print

(Asked by: username_0 on 2020-05-26)

**Update: if i press the button "Home" it will correctly posizionate the nozzle above the printing bed, with a gap wide enough to insert a sheet of paper between the nozzle and the surface.
But, and here's the strange thing, if i move the printing bed the z axis motor will rotate causing the nozzle to get too close to the surface, scratching it.**

I recently bought my first 3D printer, a Monoprice MP10 Mini. Unfortunately not a nice choice so far.

I calibrated the printer 3 times and after every print the Z axis seems to be completely off.

As a consequence, it scratched the printing bed many times.
On top of that it seems I can't get a decent print anymore, I don't know how I can describe this problem, so just look at the pictures:

[![enter image description here](https://i.sstatic.net/zZR0o.jpg)](https://i.sstatic.net/zZR0o.jpg)

[![enter image description here](https://i.sstatic.net/e454Z.jpg)](https://i.sstatic.net/e454Z.jpg)

**Tags:** z-axis, bed-leveling
> **Comments:**
> **username_1**: It looks as if your magnetic print surface is not flat anymore. Could also be a problem with the rollers of the non driven vertical axis.  
> **username_2**: Put a straight edge on your plate ... agreeing with @0scar ... it isn't flat.  
> **username_0**: I thought the same, but it's not just that, there's something wrong with the auto leveling too, I updated the original post. Even during auto leveling, the vertical motor is moving, causing the nozzle to get too close to the surface  

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## 0 answers

