3D Printing

Download and 3D Print

You can 3D print the bricks using opaque filament on almost any desktop 3D printer. The 3D printed parts can be downloaded with the link below. If you don’t have a 3D printer, the files are free to download so can send them to a 3D printing service.

Edit Design

You can easily update the size or add features by editing the Fusion360 designs. The sketches are all listed in the timeline, so it's easy to adjust the size to each component.

3D Printing Lego Bricks

The LED brick was designed in Autodesk Fusion 360 and designed to print in PLA filament. The parts were 3D printed using the BCN3D Sigma and Micro M3D. If you don’t have access to a 3D printer, you could use a service like 3D Hubs to make it for you.

Diffusing LEDs

We found Natural White PLA/PHA filament diffuses the LEDs the best. The soft diffusion illuminates the whole brick. You can also use Translucent filament for a brighter light.

Slice Settings

Depending on your 3D printer, you may need to adjust the slice settings. We tested the enclosure  on a BCN3D Sigma. The legoBody.stl part will require support materials. The parts are oriented to print "as is".

  • Nozzle: 0.31mm
  • Extrusion Multiplier: 1.0
  • Extrusion Width: 0.39mm
  • Layer Height: 0.2mm
  • Nozzle Temperature: 225c
  • Print Speed: 60mm/s
  • Brim: 6mm

Supports, Brims & Walls

 

The legoBody.stl will require supports to support the LED, battery and screw mounts .

 

Make sure to disable "dense supports" and vertical upper and lower separation layers to make the supports easier to remove. 

 

We added pillars with a resolution of 2mm to the  middle under the walls that hold the parts in place. Add the pillars so they can support the corners no the walls. 

 

Brims

 

If you encounter lifting on the corners, we'll need to add a brim to hold down the part. We used no heat and blue painter tape and a 4 brim outlines around the part.

 

Wall Strength

 

We'll want the walls of the brick to be really strong by making sure gaps between them are solid (no zig zags inside the gaps). We had to adjust the nozzle diameter and extrusion width to make sure no "zig zag" paths are inside the wall gaps. Always preview tools paths before printing to insure no strange paths are created.

Support Removal
 

The 3D printed part will need supports to hold up the mounting walls, so we can use flat pliers to help remove them.


Position the pliers under the supports and lift up the pry off as one piece. Use a hobby knife to clean up the gaps between the walls.

This guide was first published on Feb 21, 2017. It was last updated on Feb 21, 2017. This page (3D Printing) was last updated on Apr 19, 2019.