<p>This hotend design is called a Mk8 type/style hotend, based on the Mk8 Makerbot design. You should get the 40 mm length heatbreak, this option gives you some extra space, a shorter heatbreak will result in changing the Z-endstop height or raise the bed (if the endstop is fixed).</p>
<p><a href="https://i.sstatic.net/St78t.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/St78t.png" alt="enter image description here" /></a></p>
<p>The 30 mm will for sure be too short and result in a gap in the heat conducting element, the 35 mm might work. You can source the heatbreaks from typical online market places for about a dollar you get 5 pieces, order these while you try if the 35 mm version works for you (depending on endstop and bed).</p>

CC BY-SA 4.0
2022-01-14T13:17:34.950Z
Thank you for your considerations. I have a BLtouch to probe the bed. This will mean that I need to adjust the Z-offset when I'm going to try the 35 mm. I do need to check if the BLtouch will be high enough for this Z-offset
zwep
CC BY-SA 4.0
2022-01-14T15:04:41.537Z
@zwep Yes, in case you have a touch sensor you need a different bracket or move the sensor up and redefine the Z-offset.
0scar
CC BY-SA 4.0
2022-01-14T08:01:53.910Z
2022-01-14T08:01:53.910Z
0scar
<p>I need to replace my heatbreak on my Anet A6 since I pushed out the PTFE tube when my filament got clogged...</p>
<p>The current heatbreak has a length of 40 mm, but, the shop I'm buying from only sells the 30 mm or 35 mm (the 40 mm is out of stock).</p>
<p>Can I just install a 35 mm heatbreak? Or even a 30 mm? Or is the 40 mm crucial in the design of the Anet A6?</p>

<anet-a6><heat-break>
Using a shorter heatbreak on the Anet A6
zwep
# Using a shorter heatbreak on the Anet A6

(Asked by: username_0 on 2022-01-13)

I need to replace my heatbreak on my Anet A6 since I pushed out the PTFE tube when my filament got clogged...

The current heatbreak has a length of 40 mm, but, the shop I'm buying from only sells the 30 mm or 35 mm (the 40 mm is out of stock).

Can I just install a 35 mm heatbreak? Or even a 30 mm? Or is the 40 mm crucial in the design of the Anet A6?

**Tags:** anet-a6, heat-break

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## 1 answers

### Answer by username_1 on 2022-01-14. Score: 0 | Accepted answer

This hotend design is called a Mk8 type/style hotend, based on the Mk8 Makerbot design. You should get the 40 mm length heatbreak, this option gives you some extra space, a shorter heatbreak will result in changing the Z-endstop height or raise the bed (if the endstop is fixed).

[![enter image description here](https://i.sstatic.net/St78t.png)](https://i.sstatic.net/St78t.png)

The 30 mm will for sure be too short and result in a gap in the heat conducting element, the 35 mm might work. You can source the heatbreaks from typical online market places for about a dollar you get 5 pieces, order these while you try if the 35 mm version works for you (depending on endstop and bed).

> **Comments:**
> **username_0**: Thank you for your considerations. I have a BLtouch to probe the bed. This will mean that I need to adjust the Z-offset when I'm going to try the 35 mm. I do need to check if the BLtouch will be high enough for this Z-offset  
> **username_1**: @zwep Yes, in case you have a touch sensor you need a different bracket or move the sensor up and redefine the Z-offset.  

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