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.

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.

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

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

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.

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.

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

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.

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

Your printer should look something like this now

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.