<p>The CR-6 SE uses strain gauge based sensing for the auto leveling. This implies that the nozzle itself is the probe for the leveling procedure. It is important that there is no filament left on the nozzle and no debris is on the bed (of so, this causes incorrect measurement of the bed surface and results in a too large of a gap between the nozzle and the bed).</p>
<p>Normally, when you replace a nozzle, you need to re-assess the distance between the nozzle and bed with the so-called &quot;paper thickness&quot; method.</p>
<p>This video of the CR-6 shows that paper is still required:
<div class="youtube-embed"><div>
                <iframe width="640px" height="395px" src="https://www.youtube.com/embed/QRyJRGzTGYE?start=0"></iframe>
            </div></div></p>
<p>As seen from the first layer of the raft (which by the way is totally unnecessary for PLA) the nozzle is too far from the bed, you see this in balling up of filament and cutting corners where filament is dragged and not deposited. The video does show that it is required to set the Z-offset to the correct value during the printing of the first layer. It is advisable to decrease the Z-offset, alternatively you can set a Z-offset in the slicer, e.g. Ultimaker Cura has a plugin called Z-offset made by Fieldofview to set a different offset directly as slicer option.</p>
<p>You may also have an adhesion problem, probably caused by the incorrect distance, but an adhesive might be beneficial too.</p>
<p>Reprint and post a question on the quality of the print.</p>

CC BY-SA 4.0
2022-08-27T02:21:11.403Z
The auto-leveling process puts the nozle at 0.20. I can manually reduce that to 0.15, but when I do that the print fails completely, the first layer doesn't even print.
Jim
CC BY-SA 4.0
2022-08-27T05:36:29.077Z
@Jim Have you checked your extruder (it also under extrudes), there are more issues with the printer I think. Also, have you degreased the print bed surface?
0scar
CC BY-SA 4.0
2022-08-27T18:56:42.740Z
yes, I cleaaned the  print bed with soapy water. As regards to over/under extruding - I'm super new  to 3D printing and do not know what I'm  doing. This is why i'm asking for help here. And yes - I think there are more issues with the printer - I've updated the  question.
Jim
CC BY-SA 4.0
2022-08-22T08:25:44.173Z
2022-08-26T22:20:50.850Z
2022-08-26T22:20:50.850Z
0scar
<p>It almost looks like that nozzle is too far away from the bed. Try releveling your bed.</p>

CC BY-SA 4.0
2022-08-21T21:29:28.463Z
This is really a comment, not an answer. With a bit more rep, [you will be able to post comments](//3dprinting.stackexchange.com/privileges/comment).
agarza
CC BY-SA 4.0
2022-08-22T07:54:22.713Z
Hi and welcome to SE.3DP. Whilst I have upvoted your answer (just to give you some reputation), it should be said that, as argarza implies, your answer is a little brief. Could you [edit] your answer and explain why you think that the nozzle is too far away from the bed - what are the clues/indicators that make you think that? It could help to make your answer a litle more instructive/constructive. Also please take the [tour]. Thanks.
Greenonline
CC BY-SA 4.0
2022-08-23T04:24:08.533Z
Great Idea, And I tried auto-leveling my printbed before any of those pictures - sorry, I forgot to mention it in the question - but i'll add it now.
Jim
CC BY-SA 4.0
2022-08-21T20:33:52.243Z
2022-08-21T20:33:52.243Z
PassUBy 
<p>I'd be inclined to blame the filament. So my first troubleshooting measure would be to use another filament. If the problem persisted then I'd check all the belts are tight and give the printer a clean with some canned air.</p>
<p>This is assuming your levelling and settings are the same as when it was working ok. Not sure about this assumption because it does look as if your levelling is off for the first layer.</p>

CC BY-SA 4.0
2022-08-22T01:12:33.350Z
2022-08-22T01:12:33.350Z
Kilisi
<p>I'm very new to 3D printing. When my printer was new, I got loads of really good prints, however, now they're all failing.</p>
<p>I suspected that the nozzle was in bad shape, so I replaced it, but even now, the prints are still quite bad.</p>
<p>I suspect that the filament is not coming out properly. (extruding?)</p>
<p>I have a Creality Ender CR6 SE. and I'm using Overture Matte White PLA. I've tried using the default 200 °C nozzle and 60 °C print bed temperatures and I've also tried on the upper end of the recommended temperatures at 230 °C and 70 °C.</p>
<p>I've also tried reducing the print speed to 70 %.</p>
<p>Here is a picture of the first layer of  a raft:</p>
<p><a href="https://i.sstatic.net/pQdGD.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/pQdGD.png" alt="enter image description here" /></a></p>
<p>And here's a picture of a few layers in (still of the raft):</p>
<p><a href="https://i.sstatic.net/JqnSe.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/JqnSe.jpg" alt="enter image description here" /></a></p>
<p>Just before this print I did an auto-level and cleaned the printbed with warm soapy water.</p>
<p>This is the print if I leave it going:</p>
<p><a href="https://i.sstatic.net/7TBDn.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/7TBDn.jpg" alt="enter image description here" /></a></p>
<p>Additional Info: I used the auto-level feature on the CR 6 SE before any of the pictures and used Cura Slicer for slicing.</p>
<p>When using the hairspray method, I managed to get a print out - that print is a 3D Benchy:</p>
<p><a href="https://i.sstatic.net/cdXfj.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/cdXfj.png" alt="enter image description here" /></a></p>
<p>Not looking too good. Also - as you can see, I used a different filament.</p>
<p>Using the hairspray again, I tried printing this:</p>
<p><a href="https://i.sstatic.net/vN9i5.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/vN9i5.png" alt="enter image description here" /></a></p>
<p>But ended up with this:</p>
<p><a href="https://i.sstatic.net/PSSmF.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/PSSmF.png" alt="enter image description here" /></a></p>
<p><strong>UPDATE 3</strong></p>
<p>Ok, So I've found something that's probably not a good thing and I need some advice on it. I think the problem is with the print bed. I  found that it can wobble. If I put slight pressure on the front of the bed, the front goes down and the back goes up. Not by much, but there's definite give.</p>
<p>When I print a big circle, the left of the circle is &quot;thinner&quot; than it should be, unless I push down slightly on the print bed. If I do that, then the print thickness on that part of the bed seems to be correct.</p>
<p>However, if I keep that pressure while the nozzle goes around then the print loses adhesion. As soon as I release the pressure and the print bed goes back to what it was, then the print regains adhesion (on that side).</p>
<p>However, if I leave it like that, then the nozzle will be too close to the bed on the other side again.</p>
<p>Now I know. This is a tramming (leveling - are these words completely synonymous?) issue, but when I paid extra for the auto-leveling with the Ender CR6 SE, I paid that extra so that I wouldn't need to mess around with stuff like this. Is this money wasted?</p>
<p>Print nozzle too close on the left, too far on the right:</p>
<p><a href="https://i.sstatic.net/rMBag.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/rMBag.png" alt="enter image description here" /></a></p>
<p><strong>Should I contact Creality and try to return the printer and get a cheaper one that I'm going to have to manually level/tram anyway?</strong></p>

CC BY-SA 4.0
2022-08-21T19:39:44.513Z
Have you tried using any kind of adhesion, i.e. glue stick, hairspray, or blue painter's tape? When I had problems with print adhesion, I first tried blue painter's tape (that worked too well) but then settled on using a glue stick.
agarza
CC BY-SA 4.0
2022-08-21T19:45:02.340Z
Hi @agarza, thanks for the feedback. No, I have not, however, that's not really the problem here. I mean, yes it's part of the problem, but the fact is that prints are failling as well as not adhering.
Jim
CC BY-SA 4.0
2022-08-21T21:28:29.023Z
The first few layers are probably the most crucial to getting a good print. I would suggest double-checking to make sure your bed is leveled (trammed) [[How do you level (or tram) your build surface correctly?](https://3dprinting.stackexchange.com/questions/19081/how-do-you-level-or-tram-your-build-surface-correctly)] then if prints are still not sticking try additional adhesion helpers (glue stick, hairspray, painter's tape). I will say that it did take me a while to get the "sweet spot" for getting good prints.
agarza
CC BY-SA 4.0
2022-08-22T08:17:45.890Z
There are multiple issues here, the first layer is just one of them. Other issues may include underextrusion or retraction problems or a problem with the extruder.
0scar
CC BY-SA 4.0
2022-08-22T09:24:03.170Z
What slicer did you use ? It seems the travel speed is too high, and the print speed too. For PLA @ 200°C: try 44mm/sec. and 22mm/s for wall. Initial layer at 30mm/s and reduce your travel speed, so when retracting Z, the filament detach from current layer.
Valery S.
CC BY-SA 4.0
2022-08-27T19:40:21.610Z
As for the print bed wobbling, it may be that the eccentric nuts for the Y-axis are not tightened enough (see this answer for additional info [Bed wobbling on Ender 3](https://3dprinting.stackexchange.com/a/14188) and this [YouTube video](https://www.youtube.com/watch?v=GsEdU8ZtI6U) on adjustments)
agarza
<print-quality><adhesion><creality-cr-6>
Prints not sticking to bed or just not extruding?
Jim
# Prints not sticking to bed or just not extruding?

(Asked by: username_0 on 2022-08-21)

I'm very new to 3D printing. When my printer was new, I got loads of really good prints, however, now they're all failing.

I suspected that the nozzle was in bad shape, so I replaced it, but even now, the prints are still quite bad.

I suspect that the filament is not coming out properly. (extruding?)

I have a Creality Ender CR6 SE. and I'm using Overture Matte White PLA. I've tried using the default 200 °C nozzle and 60 °C print bed temperatures and I've also tried on the upper end of the recommended temperatures at 230 °C and 70 °C.

I've also tried reducing the print speed to 70 %.

Here is a picture of the first layer of a raft:

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

And here's a picture of a few layers in (still of the raft):

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

Just before this print I did an auto-level and cleaned the printbed with warm soapy water.

This is the print if I leave it going:

[![enter image description here](https://i.sstatic.net/7TBDn.jpg)](https://i.sstatic.net/7TBDn.jpg)

Additional Info: I used the auto-level feature on the CR 6 SE before any of the pictures and used Cura Slicer for slicing.

When using the hairspray method, I managed to get a print out - that print is a 3D Benchy:

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

Not looking too good. Also - as you can see, I used a different filament.

Using the hairspray again, I tried printing this:

[![enter image description here](https://i.sstatic.net/vN9i5.png)](https://i.sstatic.net/vN9i5.png)

But ended up with this:

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

**UPDATE 3**

Ok, So I've found something that's probably not a good thing and I need some advice on it. I think the problem is with the print bed. I found that it can wobble. If I put slight pressure on the front of the bed, the front goes down and the back goes up. Not by much, but there's definite give.

When I print a big circle, the left of the circle is "thinner" than it should be, unless I push down slightly on the print bed. If I do that, then the print thickness on that part of the bed seems to be correct.

However, if I keep that pressure while the nozzle goes around then the print loses adhesion. As soon as I release the pressure and the print bed goes back to what it was, then the print regains adhesion (on that side).

However, if I leave it like that, then the nozzle will be too close to the bed on the other side again.

Now I know. This is a tramming (leveling - are these words completely synonymous?) issue, but when I paid extra for the auto-leveling with the Ender CR6 SE, I paid that extra so that I wouldn't need to mess around with stuff like this. Is this money wasted?

Print nozzle too close on the left, too far on the right:

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

**Should I contact Creality and try to return the printer and get a cheaper one that I'm going to have to manually level/tram anyway?**

**Tags:** print-quality, adhesion, creality-cr-6
> **Comments:**
> **username_1**: Have you tried using any kind of adhesion, i.e. glue stick, hairspray, or blue painter's tape? When I had problems with print adhesion, I first tried blue painter's tape (that worked too well) but then settled on using a glue stick.  
> **username_0**: Hi @agarza, thanks for the feedback. No, I have not, however, that's not really the problem here. I mean, yes it's part of the problem, but the fact is that prints are failling as well as not adhering.  
> **username_1**: The first few layers are probably the most crucial to getting a good print. I would suggest double-checking to make sure your bed is leveled (trammed) [[How do you level (or tram) your build surface correctly?](https://3dprinting.stackexchange.com/questions/19081/how-do-you-level-or-tram-your-build-surface-correctly)] then if prints are still not sticking try additional adhesion helpers (glue stick, hairspray, painter's tape). I will say that it did take me a while to get the "sweet spot" for getting good prints.  
> **username_2**: There are multiple issues here, the first layer is just one of them. Other issues may include underextrusion or retraction problems or a problem with the extruder.  
> **username_3**: What slicer did you use ? It seems the travel speed is too high, and the print speed too. For PLA @ 200°C: try 44mm/sec. and 22mm/s for wall. Initial layer at 30mm/s and reduce your travel speed, so when retracting Z, the filament detach from current layer.  
> **username_1**: As for the print bed wobbling, it may be that the eccentric nuts for the Y-axis are not tightened enough (see this answer for additional info [Bed wobbling on Ender 3](https://3dprinting.stackexchange.com/a/14188) and this [YouTube video](https://www.youtube.com/watch?v=GsEdU8ZtI6U) on adjustments)  

---

## 3 answers

### Answer by username_2 on 2022-08-22. Score: 1

The CR-6 SE uses strain gauge based sensing for the auto leveling. This implies that the nozzle itself is the probe for the leveling procedure. It is important that there is no filament left on the nozzle and no debris is on the bed (of so, this causes incorrect measurement of the bed surface and results in a too large of a gap between the nozzle and the bed).

Normally, when you replace a nozzle, you need to re-assess the distance between the nozzle and bed with the so-called "paper thickness" method.

This video of the CR-6 shows that paper is still required:

As seen from the first layer of the raft (which by the way is totally unnecessary for PLA) the nozzle is too far from the bed, you see this in balling up of filament and cutting corners where filament is dragged and not deposited. The video does show that it is required to set the Z-offset to the correct value during the printing of the first layer. It is advisable to decrease the Z-offset, alternatively you can set a Z-offset in the slicer, e.g. Ultimaker Cura has a plugin called Z-offset made by Fieldofview to set a different offset directly as slicer option.

You may also have an adhesion problem, probably caused by the incorrect distance, but an adhesive might be beneficial too.

Reprint and post a question on the quality of the print.

> **Comments:**
> **username_0**: The auto-leveling process puts the nozle at 0.20. I can manually reduce that to 0.15, but when I do that the print fails completely, the first layer doesn't even print.  
> **username_2**: @Jim Have you checked your extruder (it also under extrudes), there are more issues with the printer I think. Also, have you degreased the print bed surface?  
> **username_0**: yes, I cleaaned the  print bed with soapy water. As regards to over/under extruding - I'm super new  to 3D printing and do not know what I'm  doing. This is why i'm asking for help here. And yes - I think there are more issues with the printer - I've updated the  question.  

---

### Answer by username_4 on 2022-08-21. Score: 0

It almost looks like that nozzle is too far away from the bed. Try releveling your bed.

> **Comments:**
> **username_1**: This is really a comment, not an answer. With a bit more rep, [you will be able to post comments](//3dprinting.stackexchange.com/privileges/comment).  
> **username_5**: Hi and welcome to SE.3DP. Whilst I have upvoted your answer (just to give you some reputation), it should be said that, as argarza implies, your answer is a little brief. Could you [edit] your answer and explain why you think that the nozzle is too far away from the bed - what are the clues/indicators that make you think that? It could help to make your answer a litle more instructive/constructive. Also please take the [tour]. Thanks.  
> **username_0**: Great Idea, And I tried auto-leveling my printbed before any of those pictures - sorry, I forgot to mention it in the question - but i'll add it now.  

---

### Answer by username_6 on 2022-08-22. Score: 0

I'd be inclined to blame the filament. So my first troubleshooting measure would be to use another filament. If the problem persisted then I'd check all the belts are tight and give the printer a clean with some canned air.

This is assuming your levelling and settings are the same as when it was working ok. Not sure about this assumption because it does look as if your levelling is off for the first layer.


---

