<p>There only need to be one physical endstop on each axis, if the printer has the dimensions of the printer programmed in.</p>
<p>The Ender3 has its dimensions defined in the firmware, so once homed and then moved to 0 (the end stop and 0 can be different!), the printer won't move willingly out of the orthogonal-space that is positioned between <span class="math-container">$$\matrix {0\\0\\0} \to\matrix{maxX\\ maxY\\ maxZ}$$</span>.</p>
<p>Where these are can be manipulated with the right software, as the printer in running operation takes the values from the EEPROM - which can be directly altered by for example a <a href="https://3dprinting.stackexchange.com/questions/10573/what-is-a-printer-console-terminal">terminal akin to Repetier Host.</a></p>

CC BY-SA 4.0
2022-01-18T05:42:44.293Z
Concur.  The enders have an optional Z extension kit which comes with longer rails and a replacement leadscrew.  The only config change to extend Z is in software.   Also notice that there isn't an end-switch on X or Z, just the stepper motors keeping track of steps forward and backward.
Criggie
CC BY-SA 4.0
2022-01-18T07:39:03.877Z
@Criggie you can alter the software endstop via the EEPROM - till the moment you overwrite with firmware defaults, yes.
Trish
CC BY-SA 4.0
2022-01-18T01:39:44.310Z
2022-01-18T07:41:02.817Z
2022-01-18T07:41:02.817Z
Trish
<p>As there is no limit switch on the operator end of the Y (Y-), what stops its travel when the print is done?</p>

<creality-ender-3><endstop>
Ender3 V2: What stops the Y?
USS_DDG2
# Ender3 V2: What stops the Y?

(Asked by: username_0 on 2022-01-18)

As there is no limit switch on the operator end of the Y (Y-), what stops its travel when the print is done?

**Tags:** creality-ender-3, endstop

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## 1 answers

### Answer by username_1 on 2022-01-18. Score: 1

There only need to be one physical endstop on each axis, if the printer has the dimensions of the printer programmed in.

The Ender3 has its dimensions defined in the firmware, so once homed and then moved to 0 (the end stop and 0 can be different!), the printer won't move willingly out of the orthogonal-space that is positioned between $$\matrix {0\\0\\0} \to\matrix{maxX\\ maxY\\ maxZ}$$.

Where these are can be manipulated with the right software, as the printer in running operation takes the values from the EEPROM - which can be directly altered by for example a [terminal akin to Repetier Host.](https://3dprinting.stackexchange.com/questions/10573/what-is-a-printer-console-terminal)

> **Comments:**
> **username_2**: Concur.  The enders have an optional Z extension kit which comes with longer rails and a replacement leadscrew.  The only config change to extend Z is in software.   Also notice that there isn't an end-switch on X or Z, just the stepper motors keeping track of steps forward and backward.  
> **username_1**: @Criggie you can alter the software endstop via the EEPROM - till the moment you overwrite with firmware defaults, yes.  

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