<p>I have tried to print the piece upside-down with the cave part facing down and it worked.
Since the printer prints upside down, positioning the cave part facing up creates a suction-cup effect on the printer display that makes the whole structure stick to the lcd and detach from the supporting structure, thus making the print fail. </p>

CC BY-SA 4.0
2020-03-10T15:03:21.160Z
Update: even better solution is to print sideways. I tried to print a cylindrical shape with a hole in the middle that stops halfway (more or less like a glass or a cup, but with thick walls). The only successful way of printing it was to lay it sideways.
user3161330
CC BY-SA 4.0
2020-03-09T13:11:03.300Z
2020-03-09T13:11:03.300Z
user3161330
<p>I am trying to print a box shaped object with an ELEGOO Mars SLA printer. I positioned the piece rotating it on X and Y axis 35 and 30 degrees. 
However, the print fails because the piece does not stick to the supporting structure (see picture). </p>

<p>Do you think that it could be a problem of the piece sticking to the display due to overexposure or deteriorated film? Or is it something else? 
I tried two prints, lowering the exposure time from 8 to 6 seconds, the second print still failed but at least the piece is not totally stuck to the display. </p>

<p>Any other idea?</p>

<p>First failed print with 8 seconds exposure: the film was completely jammed and all the resin was stuck there (this is why there is no piece on top of the supporting material)
<a href="https://i.sstatic.net/xnSMg.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/xnSMg.jpg" alt="First failed print"></a></p>

<p>Second failed print with 6 seconds exposure: the film was perfectly clean, but the object did not stick to the supporting materials therefore collapsing. 
<a href="https://i.sstatic.net/eOJOs.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/eOJOs.jpg" alt="Second failed print pic1"></a>
<a href="https://i.sstatic.net/Yhxke.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/Yhxke.jpg" alt="Second failed print pic2"></a></p>

<p>This is the 3D drawing
<a href="https://i.sstatic.net/R9DZD.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/R9DZD.jpg" alt="3D drawing"></a></p>

CC BY-SA 4.0
2020-03-08T16:38:44.310Z
I think I have found the solution: it has to be printed up side down to prevent the “suction cup” effect
user3161330
<support-structures><sla><print-failure><support-material><elegoo-mars>
SLA printing: piece does not stick to supporting structures
user3161330
# SLA printing: piece does not stick to supporting structures

(Asked by: username_0 on 2020-03-08)

I am trying to print a box shaped object with an ELEGOO Mars SLA printer. I positioned the piece rotating it on X and Y axis 35 and 30 degrees.
However, the print fails because the piece does not stick to the supporting structure (see picture).

Do you think that it could be a problem of the piece sticking to the display due to overexposure or deteriorated film? Or is it something else?
I tried two prints, lowering the exposure time from 8 to 6 seconds, the second print still failed but at least the piece is not totally stuck to the display.

Any other idea?

First failed print with 8 seconds exposure: the film was completely jammed and all the resin was stuck there (this is why there is no piece on top of the supporting material)
[![First failed print](https://i.sstatic.net/xnSMg.jpg)](https://i.sstatic.net/xnSMg.jpg)

Second failed print with 6 seconds exposure: the film was perfectly clean, but the object did not stick to the supporting materials therefore collapsing.
[![Second failed print pic1](https://i.sstatic.net/eOJOs.jpg)](https://i.sstatic.net/eOJOs.jpg)
[![Second failed print pic2](https://i.sstatic.net/Yhxke.jpg)](https://i.sstatic.net/Yhxke.jpg)

This is the 3D drawing
[![3D drawing](https://i.sstatic.net/R9DZD.jpg)](https://i.sstatic.net/R9DZD.jpg)

**Tags:** support-structures, sla, print-failure, support-material, elegoo-mars
> **Comments:**
> **username_0**: I think I have found the solution: it has to be printed up side down to prevent the “suction cup” effect  

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## 1 answers

### Answer by username_0 on 2020-03-09. Score: 5 | Accepted answer

I have tried to print the piece upside-down with the cave part facing down and it worked.
Since the printer prints upside down, positioning the cave part facing up creates a suction-cup effect on the printer display that makes the whole structure stick to the lcd and detach from the supporting structure, thus making the print fail.

> **Comments:**
> **username_0**: Update: even better solution is to print sideways. I tried to print a cylindrical shape with a hole in the middle that stops halfway (more or less like a glass or a cup, but with thick walls). The only successful way of printing it was to lay it sideways.  

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