<p>I had Lego MOCs loose their clutch on me after being left in a car for 9 hours during the summer.  Outside temp was about 100F, so inside was quite a bit hotter.  After this, I had to glue the MOCs back together.</p>

<p>So, the shorter answer is that I'd imagine that a candle could damage the plastics at least to the point where the bricks would not hold together very well.</p>

CC BY-SA 3.0
2011-11-07T15:25:44.777Z
2011-11-07T15:25:44.777Z
Nathan
<ul>
<li>ABS maximum temperature is 80°C (176°F) and melt at 105°C (221°F)</li>
<li>Polycarbonate plastic used for transparent bricks melt at 267°C (512.6°F)</li>
</ul>

<p>Since a candle flame has a temperature in excess of 1000°C (1832°F). I would advise against making a candle holder of LEGO bricks.</p>

<p>Plastic types are explained on this <a href="https://bricks.stackexchange.com/questions/155/are-transparent-neon-lego-bricks-made-from-a-different-plastic-than-usual">question</a>.</p>

CC BY-SA 3.0
2011-11-07T19:23:55.437Z
ABS melting at 105C/220F is most likely the reason why LEGO discourage the dishwasher for cleaning bricks.
jfyelle
CC BY-SA 4.0
2018-11-20T14:01:47.080Z
And it should be noted that ABS can deform under much lower heat than even 80C. Even direct sunlight on a hot summer day can warp parts.
MindS1
CC BY-SA 3.0
2011-11-03T21:42:21.363Z
2014-12-21T18:38:02.570Z
2017-04-13T12:47:56.213Z
jfyelle
<p>I was thinking on making a decorative LEGO candle holder. It would be made out of regular ABS LEGO bricks, but also transparent ones. Because there will be an open flame involved, I want to make sure my LEGO bricks don't melt.</p>

<p>How much heat can LEGO bricks withstand?</p>

CC BY-SA 3.0
2011-11-07T16:16:00.273Z
You might consider using an LED imitation "flameless" candle. These come in different sizes that may fit your idea, and some even have a wax exterior.
aedia λ
<durability><plastics>
How much heat can LEGO bricks withstand?
Pubby
# How much heat can LEGO bricks withstand?

(Asked by: username_0 on 2011-11-03)

I was thinking on making a decorative LEGO candle holder. It would be made out of regular ABS LEGO bricks, but also transparent ones. Because there will be an open flame involved, I want to make sure my LEGO bricks don't melt.

How much heat can LEGO bricks withstand?

**Tags:** durability, plastics

> **Comments:**
> **username_1**: You might consider using an LED imitation "flameless" candle. These come in different sizes that may fit your idea, and some even have a wax exterior.  

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## 2 answers

### Answer by username_3 on 2011-11-03. Score: 32 | Accepted answer

* ABS maximum temperature is 80°C (176°F) and melt at 105°C (221°F)
* Polycarbonate plastic used for transparent bricks melt at 267°C (512.6°F)

Since a candle flame has a temperature in excess of 1000°C (1832°F). I would advise against making a candle holder of LEGO bricks.

Plastic types are explained on this [question](https://bricks.stackexchange.com/questions/155/are-transparent-neon-lego-bricks-made-from-a-different-plastic-than-usual).

> **Comments:**
> **username_3**: ABS melting at 105C/220F is most likely the reason why LEGO discourage the dishwasher for cleaning bricks.  
> **username_4**: And it should be noted that ABS can deform under much lower heat than even 80C. Even direct sunlight on a hot summer day can warp parts.  

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### Answer by username_2 on 2011-11-07. Score: 5

I had Lego MOCs loose their clutch on me after being left in a car for 9 hours during the summer. Outside temp was about 100F, so inside was quite a bit hotter. After this, I had to glue the MOCs back together.

So, the shorter answer is that I'd imagine that a candle could damage the plastics at least to the point where the bricks would not hold together very well.


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