<p>I had this issue where it really seems like it should have worked, especially as the parts were pretty small. The issue is that I placed the parts back-to-front, and it was going to follow that order despite some other resources saying &quot;print parts individually&quot; meant it would print them front-to-back.</p>
<p>Reordering the parts by dragging made the error disappear:</p>
<p><a href="https://i.sstatic.net/o1djvNA4.png" rel="noreferrer"><img src="https://i.sstatic.net/o1djvNA4.png" alt="screenshot showing error with large part in the back, printing first" /></a></p>
<p><a href="https://i.sstatic.net/eAa7oqUv.png" rel="noreferrer"><img src="https://i.sstatic.net/eAa7oqUv.png" alt="screenshot with large back part dragged to the bottom of the list, with no error" /></a></p>

CC BY-SA 4.0
2024-09-13T15:58:00.320Z
2024-09-13T15:58:00.320Z
Nick T
<p>The error message explains that you cannot print your objects sequentially as they are too tall for the gantry to go back to the bed level after the first object.</p>
<p>In other words, your clearance between bed and gantry is too small.</p>

CC BY-SA 4.0
2021-01-24T23:36:39.140Z
2021-01-24T23:36:39.140Z
0scar
<p>The following setup seems printable.</p>
<p>Why do I get this error?</p>
<blockquote>
<p>Some objects are too tall and cannot be printed without extruder
collisions.</p>
</blockquote>
<p><a href="https://i.sstatic.net/FuGea.png" rel="nofollow noreferrer" title="Screenshot of error"><img src="https://i.sstatic.net/FuGea.png" alt="Screenshot of error" title="Screenshot of error" /></a></p>

<prusaslicer>
Sequential Printing: Some objects are too tall and cannot be printed without extruder collisions
Allan Xu
# Sequential Printing: Some objects are too tall and cannot be printed without extruder collisions

(Asked by: username_0 on 2021-01-24)

The following setup seems printable.

Why do I get this error?

> Some objects are too tall and cannot be printed without extruder
> collisions.

[![Screenshot of error](https://i.sstatic.net/FuGea.png "Screenshot of error")](https://i.sstatic.net/FuGea.png "Screenshot of error")

**Tags:** prusaslicer

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## 2 answers

### Answer by username_1 on 2024-09-13. Score: 5

I had this issue where it really seems like it should have worked, especially as the parts were pretty small. The issue is that I placed the parts back-to-front, and it was going to follow that order despite some other resources saying "print parts individually" meant it would print them front-to-back.

Reordering the parts by dragging made the error disappear:

[![screenshot showing error with large part in the back, printing first](https://i.sstatic.net/o1djvNA4.png)](https://i.sstatic.net/o1djvNA4.png)

[![screenshot with large back part dragged to the bottom of the list, with no error](https://i.sstatic.net/eAa7oqUv.png)](https://i.sstatic.net/eAa7oqUv.png)


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### Answer by username_2 on 2021-01-24. Score: 1

The error message explains that you cannot print your objects sequentially as they are too tall for the gantry to go back to the bed level after the first object.

In other words, your clearance between bed and gantry is too small.


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