Lego EV3 3D Printer 2.0

Hi! My name's William and this is my first time on instructable.com

My first project is this Lego Mindstorms 3D printer. I've already built a prototype before this version, but the results were well...mediocre. This is the 2.0 version. It's more precise, more efficient and the printed objects are better than in the previous version, although far from perfection.

Step 1: Step 1: Building the X and Y axis

Lego EV3 3D Printer 2.0

You'll need:

- 2 large (16x32) lego plates

- About 30 Lego gear racks (4x1)

- Long and thin Lego bricks

I think that the image explains pretty well how to build the X and Y axis so I hope you won't need any further information for this step.

Step 2: Step 2: The Y axis moving platform

Lego EV3 3D Printer 2.0
Lego EV3 3D Printer 2.0
Lego EV3 3D Printer 2.0

You'll need:

1 square Lego plate (16x16)

Several long Lego Technic bricks with holes (Number depends on the size)

Some Lego pins

2 large Lego gears

2 small Lego gears

Step 3: Step 3: The X axis crane

Lego EV3 3D Printer 2.0
Lego EV3 3D Printer 2.0

You'll need:

Lots of Lego blocks

A 16x12 Lego plate (or a few smaller plates put together)

Those crane Lego parts (Found in the old "Lego Mars Mission" sets or some Lego train sets)

Some Lego Technic parts with holes

Step 4: Step 4: the X axis crane motor

Lego EV3 3D Printer 2.0
Lego EV3 3D Printer 2.0
Lego EV3 3D Printer 2.0

Similar to the Y axis platform motor, the X axis motor needs to be wider, in order to stabilize the crane.

Once built, you'll only need to attach the X motor beneath the crane.

Step 5: Step 5: the Z axis motor

Lego EV3 3D Printer 2.0
Lego EV3 3D Printer 2.0

You'll need:

1 Large EV3 motor

some twine

2 Lego tyres

2 Medium Lego gears

When finished, just attach the motor to the cranes' front arms.

Step 6: Step 6: the extruder

Lego EV3 3D Printer 2.0
Lego EV3 3D Printer 2.0
Lego EV3 3D Printer 2.0

NOTE: attache the extruder to the Z axis motor ONLY after step 7

You'll need:

Some Lego Technic parts with holes

A glue gun (with glue stick)

A medium EV3 motor

some twine

A large Lego tyre

A small Lego wheel hub

NOTE: attache the extruder to the Z axis motor ONLY after step 7

Step 7: Step 7: Balancing the crane

Lego EV3 3D Printer 2.0

Try to find a counterweight for the back arms of your crane in order to balance the crane. Try to find a balance between the heavy glue gun extruder and the counterweight.

Step 8: Step 8: the brick

Lego EV3 3D Printer 2.0

Attach the EV3 brick to the bottom of the crane platform.

Step 9: Step 9:

Lego EV3 3D Printer 2.0

Your printer should look something like this now

Step 10: Step 10: Programming the Printer

Lego EV3 3D Printer 2.0

The image shows a program that I used to print a square.

Depending on the glue gun you used, the extruders' motors' speed will vary form program to program.

Step 11: Step 11: Print!

Lego EV3 3D Printer 2.0
Lego EV3 3D Printer 2.0
 
 

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