<p>There is one on <a href="https://thingiverse.com/thing:3399986" rel="nofollow noreferrer">thingiverse</a>. I haven't tried it.</p>
<p><a href="https://i.sstatic.net/7H8lb.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/7H8lb.png" alt="3-D printed universal joint" /></a></p>

CC BY-SA 4.0
2022-05-23T04:01:03.017Z
2022-05-23T04:01:03.017Z
RSchulz
<p>I'm seeking <em><strong>black</strong></em> universal joints for a project. Do these exist in genuine LEGO form? I'm guessing the answer is no, despite hints (<a href="https://www.bricklink.com/catalogPG.asp?P=9244c01&amp;colorID=11" rel="nofollow noreferrer">here</a> and <a href="https://www.brickowl.com/catalog/lego-black-universal-joint-4" rel="nofollow noreferrer">here</a>). Ideally, I'd like the 3L size.</p>
<ul>
<li>Do you know of a non-LEGO source that sells black u-joints?</li>
<li>Do you know if <a href="https://www.brothers-brick.com/2013/06/30/50-shades-of-bley-iain-heaths-mad-lego-science/" rel="nofollow noreferrer">dying</a> the standard gray LEGO u-joints black is possible, especially given that these parts are relatively small and complex?</li>
<li>Do you know if any rapid manufacturing process, e.g., 3D printing, could produce a nice u-joint?</li>
</ul>

CC BY-SA 4.0
2022-04-19T02:57:38.373Z
They don't show up as black in any inventory, but that doesn't rule their existence out. But they do seem unlikely to be available by the usual not-in-set means (test bricks, Pick-a-Brick wall, etc.). As far as coloring, I'd think it'd be a lot easier to dye (or paint) something light to be black instead of the other way around.
RSchulz
CC BY-SA 4.0
2022-04-19T03:02:12.797Z
I'd also recommend searching for "build your own lego universal joint" - some of the solutions may be exactly what you're looking for.
RSchulz
CC BY-SA 4.0
2022-04-19T05:19:55.177Z
@RSchulz I don't see why you couldn't post your comments as an answer.
Alex
CC BY-SA 4.0
2022-04-19T13:32:34.980Z
Don't think painting UJ's is a good idea, the hinge points are rather small and paint likely would add friction there or glue the hinge points fixed...
Michael Verschaeve
CC BY-SA 4.0
2022-04-19T14:17:14.413Z
@RSchulz I don’t think a build-your-own would work for my project. I’m looking for the 3L u-joint specifically.
EJ Mak
CC BY-SA 4.0
2022-04-19T20:42:36.900Z
@Alex I appreciate the note of confidence, but I was hoping someone would have something positive and more helpful to say. Mine is all speculation and doom and gloom. And I agree with (no at allowed) Michael Verschaeve that this part seems like the worst case scenario for painting.
RSchulz
<technic><colour><customization><3d-printing>
Black Universal Joints
EJ Mak
# Black Universal Joints

(Asked by: username_0 on 2022-04-19)

I'm seeking ***black*** universal joints for a project. Do these exist in genuine LEGO form? I'm guessing the answer is no, despite hints ([here](https://www.bricklink.com/catalogPG.asp?P=9244c01&colorID=11) and [here](https://www.brickowl.com/catalog/lego-black-universal-joint-4)). Ideally, I'd like the 3L size.

* Do you know of a non-LEGO source that sells black u-joints?
* Do you know if [dying](https://www.brothers-brick.com/2013/06/30/50-shades-of-bley-iain-heaths-mad-lego-science/) the standard gray LEGO u-joints black is possible, especially given that these parts are relatively small and complex?
* Do you know if any rapid manufacturing process, e.g., 3D printing, could produce a nice u-joint?

**Tags:** technic, colour, customization, 3d-printing

> **Comments:**
> **username_1**: They don't show up as black in any inventory, but that doesn't rule their existence out. But they do seem unlikely to be available by the usual not-in-set means (test bricks, Pick-a-Brick wall, etc.). As far as coloring, I'd think it'd be a lot easier to dye (or paint) something light to be black instead of the other way around.  
> **username_1**: I'd also recommend searching for "build your own lego universal joint" - some of the solutions may be exactly what you're looking for.  
> **username_2**: @username_1 I don't see why you couldn't post your comments as an answer.  
> **username_3**: Don't think painting UJ's is a good idea, the hinge points are rather small and paint likely would add friction there or glue the hinge points fixed...  
> **username_0**: @username_1 I don’t think a build-your-own would work for my project. I’m looking for the 3L u-joint specifically.  
> **username_1**: @username_2 I appreciate the note of confidence, but I was hoping someone would have something positive and more helpful to say. Mine is all speculation and doom and gloom. And I agree with (no at allowed) username_3 that this part seems like the worst case scenario for painting.  

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## 1 answers

### Answer by username_1 on 2022-05-23. Score: 1

There is one on [thingiverse](https://thingiverse.com/thing:3399986). I haven't tried it.

[![3-D printed universal joint](https://i.sstatic.net/7H8lb.png)](https://i.sstatic.net/7H8lb.png)


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