BY Jenifer 0 15,641

Have you heard of 3D printing Lego bricks? 3D printing has made it possible that every Lego fan can print their Lego accessory, manually without buying it. Certainly, those with fun-filled childhood would have had a Lego collection probably, tucked away somewhere by now. Imagine recreating those pieces of toys, and Lego accessories maybe for children, to uptick an old collection or to create something special: medieval castles, western ranch, spaceships or submarines. Obviously, they cannot use the same methods used by Lego – melting rubber at school high temperature and forcing it through a mold.

3D printing Lego bricks

Interestingly, with the advancement in technology, any Lego fan can create their own accessories with a 3D printer like Dobot Mooz. All you need is a design and a 3D machine.

3D Lego Print

3D Lego print is simply using a 3D machine (Dobot Mooz) to fabricate, make or print their desired plastic or metal Lego accessories at their own convenience. The benefits are enormous, they can pick a Lego accessory and fine tune it to fit what we have in mind, or reinvent an old-forgotten Lego accessory. However, another benefit is that Lego fans don’t need to buy a Lego accessory anymore, rather they can print it them self.

3D Lego Print

Also, they get the chance to do it themselves – manually create the accessories they want and get the satisfaction of doing that. Having heard of 3D printing Lego bricks nevertheless, I will paint a clear picture. 3D printing uses components or materials of plastic or metal to build, fabricate or print designs given to it (through a computer) layer-upon-layer. They can envision it as their normal printer but, in this case, it prints upwards; which creates three-dimensional products (accessories in this case) in the end.

Consequently, with 3D printing, they can print complex Lego accessories quickly with their desired quality.

How to create a 3D Lego print

Surely, they would love to create their first 3D Lego accessory, but don’t have an idea on what do to? I have made it very easy for them, given that they have a 3D printer and a computer. Let’s begin with the materials needed for your 3D Lego print:

A Tazbot 3D printer


ABS plastic and Mooz

Step 1


Have them launch SolidWorks application on their computer, click file > new > part to begin their design.

Step 2

They should start their sketching from the top plane, to create a Lego brick that looks like we are looking down on it. After selecting the top plane, draw the base of the Lego brick; begin a sketch and then click the center rectangle option on the top left corner on the window.

Step 3

Having drawn a rectangle next is to define the sketch. Use the smart dimension to define the rectangle into 16 mm x 16 mm, at the top left corner of the window of the rectangle sketch tool. Make sure the sketch is black which indicates it's fully defined, to avoid issues when modeling the sketch.

Step 4

After defining the sketch, next is to extrude it. Using features in the toolbar under the top screen, select the extrude base/boss option. Then, select the rectangle sketch to extrude it, extrude towards the right direction afterward, dimension the rectangle to 10 mm now click the green check button.

Step 5

At this point, they need to start the circles. Select the Lego brick sketch top part, find the label of the Boss-extrude from the left menu, right-click then choose 'normal to', now click the circle sketch tool.

Step 6

Draw the one circle. While sketching the circle, forget about the specifics as the smart dimension too will fix everything later on. The circle's dimension should be 4 mm to each side of the Lego brick.

Step 7

Use mirror tool to create lego bricks

Using the mirroring tool, create other circles, using the mirror entities sketch tool. Begin by making two center lines to use as the mirror line, to create the two centerline use the line tool from the drop-down menu. Position the two center lines around the red origin that runs horizontally and vertically or from the mid-point on the box.

Next is to click the mirror entities tool, which pops up an entities mirror box, here select the dimensioned circle as the mirroring item.

Then, select the mirror box and select the perpendicular line to mirror the initial circle, repeat the same process to mirror the remaining two lines.

Step 8

Extruding circles: create the top side of the Lego brick to make it stackable. First, highlight the circle created with the mirror tool, and then extrude them upwards 2mm.

Step 9

Hollow out the brick, by selecting the Lego brick underside. Select the Lego brick underside, and select the shell option at the feature toolbar center to hollow out the brick. Then, select the bottom of the Lego brick and dimension to 1 mm.

Step 10

Build the extra stacking piece, then create the bottom of the Lego brick and make it stackable. To do this, highlight the brick's bottom. And choose the circle drawing. Make the circle in relation to the red origin; dimension the circle's diameter to 5.40 m.

Step 11

 Use offset entities, from the toolbar to create a circle. Importantly, overturn the direction of the circle so it offsets at one millimeter away from the first circle.

Step 12

Shape the 2 circles inners side to form the last piece

Step 13

Save the work, after completing the steps and defining the sketch, save the part as an STL file from the top down menu.

Step 14

Now to 3D printing Lego bricks, for the Tazbot 3D printer, click on the “Cura control panel” at the upper left corner; enter 240°C as the nozzle temperature, and 110°C for the bed temperature.

Step 15

Setting things up, at the left side of the menu select "intermediate" for the material ease of use next, set the & material "as ABS (Village Plastics)" then set the quick print profile to "standard".

Step 16

Uploading the file, click on the box "Load Model" at the upper left corner then click on the model created.

Step 17

Positioning your model, place the object where you want it on the printing bed using the three commands (Scale, Mirror, and Rotate) at the bottom. Place the object so most of the surface area is on the printing bed.

Step 18

Click "print" when everything is set.

Step 19

Keep an eye on your work until it's complete.

10 Lego accessories that can be 3D printed

3D printed lego rings

Lego accessories one can print with a 3D printer are innumerable, and their models for printing in a 3D printer can be downloaded online on Thingiverse, Yeggi, Tinkercad, and Turbosquid. Ten Lego accessories one can 3D Print are:

1. Customizable Lego Ring

2. Lego light switch plate

3. Curved and rounded Lego Bricks

4. Lego giant superhero collection

5. Lego wheelchair

6. Lego zombie head

7. Lego head LED lamp

8. Lego train track crossing

9. Lego bowtie

10. Meeperbot Robotic Lego Base.

Powerful and multifunctional 3D printer

In conclusion, having explained Lego Bricks, the benefit of 3D printing Lego bricks, how to make a 3D Print of Lego Bricks and other Lego accessories, it's time to practice making a Lego accessory. With the 3D printer (Dobot Mooz), you can achieve CNC carving, laser engraving, and 3D printing with just a single machine. Meaning, you get to save money to execute these functions independently. Simply Amazing!

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