<p>When trying to print wide curves (~4inch radius), later layers of the brim seem to print too close (or over extrude, or otherwise collide) with previous layers, causing the previous layers to detach from the bed. Examples:</p>

<p><a href="https://i.sstatic.net/2cT4E.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/2cT4E.jpg" alt="enter image description here"></a></p>

<p><a href="https://i.sstatic.net/l3mNh.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/l3mNh.jpg" alt="enter image description here"></a></p>

<p>(I realise that in these pictures my z-offset looks too small, but I have tried this at a range of z-offsets until the print fails to adhere to the bed at all. The issue persists throughout the whole range of z-offset)</p>

<p>My setup:</p>

<ul>
<li>Ender 3</li>
<li>v1.1.4 mainboard with non-silent steppers</li>
<li>genuine bltouch v3, with official creality pin27 kit*</li>
<li>marlin 1.1.9 bugfix firmware* </li>
<li>single probe</li>
<li>stock build surface (religiously alcoholed thoroughly before every print)</li>
<li>cura slicer 4.2.0</li>
<li>Start gcode heats bed, homes (G28), performs ABL* (G29), then heats nozzle (don't have the actual gcode on my now as I'm away from my slicing computer)</li>
</ul>

<p>*issues existed before installing the bltouch, while running completely stock printer and firmware. </p>

<p><strong>Why are these curved brims failing?  How can I make these models print properly?</strong> </p>

<p>(I don't think it's related, hence posting it as a <a href="https://3dprinting.stackexchange.com/questions/11239/ender-3-bltouch-fails-in-assorted-ways">different question</a> but just incase it is: my bl touch doesn't always behave properly. 
The issues listed in that question however usually mean that the print does not even get to this stage.)</p>

CC BY-SA 4.0
2019-10-25T12:22:50.540Z
when did you last clean your print surface and relevel?
Trish
CC BY-SA 4.0
2019-10-25T12:28:37.063Z
I clean the build surface with isopropyl alcohol before every print, and re-level after any failed first layer.  Each of the pictures was taken immediately after doing both of those processes.
Ty Hayes
CC BY-SA 4.0
2019-10-25T13:44:02.433Z
what's your first layer thickness?
Trish
CC BY-SA 4.0
2019-10-25T22:57:55.583Z
What is the target temperature of both your nozzle and HBP? Also what material filament are you working with?
tbm0115
CC BY-SA 4.0
2019-10-26T02:10:00.093Z
Printing pla anywhere between 180-200 (have experimented with no effect on this issue) and bed 40-50. Initial layer 0.2mm.
Ty Hayes
<creality-ender-3><print-failure><brims>
Ender 3 failing on brim for wide curves
Ty Hayes
# Ender 3 failing on brim for wide curves

(Asked by: username_0 on 2019-10-25)

When trying to print wide curves (~4inch radius), later layers of the brim seem to print too close (or over extrude, or otherwise collide) with previous layers, causing the previous layers to detach from the bed. Examples:

[![enter image description here](https://i.sstatic.net/2cT4E.jpg)](https://i.sstatic.net/2cT4E.jpg)

[![enter image description here](https://i.sstatic.net/l3mNh.jpg)](https://i.sstatic.net/l3mNh.jpg)

(I realise that in these pictures my z-offset looks too small, but I have tried this at a range of z-offsets until the print fails to adhere to the bed at all. The issue persists throughout the whole range of z-offset)

My setup:

* Ender 3
* v1.1.4 mainboard with non-silent steppers
* genuine bltouch v3, with official creality pin27 kit\*
* marlin 1.1.9 bugfix firmware\*
* single probe
* stock build surface (religiously alcoholed thoroughly before every print)
* cura slicer 4.2.0
* Start gcode heats bed, homes (G28), performs ABL\* (G29), then heats nozzle (don't have the actual gcode on my now as I'm away from my slicing computer)

\*issues existed before installing the bltouch, while running completely stock printer and firmware.

**Why are these curved brims failing? How can I make these models print properly?**

(I don't think it's related, hence posting it as a [different question](https://3dprinting.stackexchange.com/questions/11239/ender-3-bltouch-fails-in-assorted-ways) but just incase it is: my bl touch doesn't always behave properly.
The issues listed in that question however usually mean that the print does not even get to this stage.)

**Tags:** creality-ender-3, print-failure, brims
> **Comments:**
> **username_1**: when did you last clean your print surface and relevel?  
> **username_0**: I clean the build surface with isopropyl alcohol before every print, and re-level after any failed first layer.  Each of the pictures was taken immediately after doing both of those processes.  
> **username_1**: what's your first layer thickness?  
> **username_2**: What is the target temperature of both your nozzle and HBP? Also what material filament are you working with?  
> **username_0**: Printing pla anywhere between 180-200 (have experimented with no effect on this issue) and bed 40-50. Initial layer 0.2mm.  

---

## 0 answers

