<p><strong>You can't print a LEGO<sup>TM</sup> Brick, because you are not Lego System A/S.</strong> The best you can do is print a brick that is <em>compatible</em> with LEGO<sup>TM</sup> bricks. Also note that Lego Systems A/S has more than 600 US design patents, which might interfere with the legality of manufacturing bricks in the US.</p>
<p>The original bricks are made from ABS and made with a <em>very</em> tight tolerance and uses the inherent flexibility of the material to create a friction fit. However, Resin prints do lack the required mix of sturdyness and flexibility and thus can't create the required friction fit.</p>
<p>In other words: You can't make bricks that are compatible with LEGO<sup>TM</sup> bricks with a resin printer based on the material properties.</p>

CC BY-SA 4.0
2021-06-13T05:53:58.030Z
Given that OP seems to want to use a coating for color already, could it work to do resin prints with additional clearance allowing for additional thickness from the coating to provide the needed flexibility and friction fit?
R.. GitHub STOP HELPING ICE
CC BY-SA 4.0
2021-06-13T07:50:02.957Z
@R..GitHubSTOPHELPINGICE no. the coating would just get destroyed over time.
Trish
CC BY-SA 4.0
2021-06-14T06:26:14.757Z
The main patent on Legos has been expired since the 90’s, I remember when all these knockoffs were hitting the market. Also US patent law does not prohibit an individual from making a clone for their own personal use.
ChinchillaWafers
CC BY-SA 4.0
2021-06-14T10:01:44.637Z
Design patents are different.
Trish
CC BY-SA 4.0
2021-06-12T21:57:49.307Z
2021-06-12T22:18:00.073Z
2021-06-12T22:18:00.073Z
Trish
<p>How can I print Lego bricks in order to make them attach?</p>
<p>I need them to be standalone pieces. I use resin to print. My model is Elegoo Mars 3. What resolution should I use?</p>
<p>Also, how should I color the bricks? I have some colored resin at home but I want to make them all black and color them afterward.</p>

<3d-models><resin><legal><elegoo-mars><bricks>
How to print Lego bricks?
Ium Test
# How to print Lego bricks?

(Asked by: username_0 on 2021-06-12)

How can I print Lego bricks in order to make them attach?

I need them to be standalone pieces. I use resin to print. My model is Elegoo Mars 3. What resolution should I use?

Also, how should I color the bricks? I have some colored resin at home but I want to make them all black and color them afterward.

**Tags:** 3d-models, resin, legal, elegoo-mars, bricks

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## 1 answers

### Answer by username_1 on 2021-06-12. Score: 3

**You can't print a LEGOTM Brick, because you are not Lego System A/S.** The best you can do is print a brick that is *compatible* with LEGOTM bricks. Also note that Lego Systems A/S has more than 600 US design patents, which might interfere with the legality of manufacturing bricks in the US.

The original bricks are made from ABS and made with a *very* tight tolerance and uses the inherent flexibility of the material to create a friction fit. However, Resin prints do lack the required mix of sturdyness and flexibility and thus can't create the required friction fit.

In other words: You can't make bricks that are compatible with LEGOTM bricks with a resin printer based on the material properties.

> **Comments:**
> **username_2**: Given that OP seems to want to use a coating for color already, could it work to do resin prints with additional clearance allowing for additional thickness from the coating to provide the needed flexibility and friction fit?  
> **username_1**: @R..GitHubSTOPHELPINGICE no. the coating would just get destroyed over time.  
> **username_3**: The main patent on Legos has been expired since the 90’s, I remember when all these knockoffs were hitting the market. Also US patent law does not prohibit an individual from making a clone for their own personal use.  
> **username_1**: Design patents are different.  

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