New Raprep 3d Printer

About the project

Hello, I am planning to develop a new 3d printer based on one of the existing Raprep designs. I want to make this printer as replicable as possible, with largest percentage of all parts 3d printed. I already have experience in 3d printing using Ender 3 V2, soldering and programming. I am 4th year computer engineering student.

Project info

Difficulty: Difficult

Platforms: ArduinoRaspberry PiEnderPrusa

Estimated time: 1 month

License: GNU General Public License, version 3 or later (GPL3+)

Items used in this project

Hardware components

Borosilicate glass build platform (about 200mm x 200mm) Borosilicate glass build platform (about 200mm x 200mm) x 1
Power supply (12V, 120W) Power supply (12V, 120W) x 1
RAMPS 1.6 controller RAMPS 1.6 controller x 1
Mechanical limit micro-switches Mechanical limit micro-switches x 4
Stepper motors (NEMA17, 40mm long, 1.5A/phase) Stepper motors (NEMA17, 40mm long, 1.5A/phase) x 5
Arduino mega 2560 Arduino mega 2560 x 1
Pla 1.75 Mm 1 Kg Spl 3d Filament Grey Pla 1.75 Mm 1 Kg Spl 3d Filament Grey x 2
https://github.com/revarbat/snappy-reprap/wiki/v3.0-BOM https://github.com/revarbat/snappy-reprap/wiki/v3.0-BOM x 1
DRV8825 Stepper Motor Driver, pololu DRV8825 Stepper Motor Driver, pololu x 5
40mm 12v 0.15A 2-pin cooling fan, 10mm thick. 40mm 12v 0.15A 2-pin cooling fan, 10mm thick. x 2
J-Head Extruder hot end w/heater, thermistor. J-Head Extruder hot end w/heater, thermistor. x 1
Wires Wires x 1
Extruder Drive Gear Extruder Drive Gear x 1
686 bearing 686 bearing x 1
3mm x 12mm socket head screws 3mm x 12mm socket head screws x 1
3mm nuts 3mm nuts x 1

View all

Software apps and online services

Visual studio code Visual studio code

Hand tools and fabrication machines

3d printer 3d printer x 1
Soldering iron Soldering iron x 1

Story

I always wanted to build a self replicating 3d printer. Unfortunately we are limited by material properties. For example you cannot 3d print nozzle using regular plastic, since it will melt at the same temperature as plastic it is extruding. But there are methods of going around this, like quenching, annealing, or curing(for resin 3d printers), which may allow this to be possible, at least in theory. Also stepper motors can be 3d printed using special magnetic and conducting filaments, there was some researches for the last couple years, but existing designs produce too much heat and melt too quickly to be useful for today. Now, the only major remaining part which cannot be printed remains the logic board and stepper drivers. Yet there already is some research going on about the 3d printing of the semiconductors. 

I believe that everything can be printed including the 3d printer itself  once you can use only 5 filaments: Mechanical dielectric filament such as PLA plastic, conducting filament, magnetic filament, filament for annealing (some progress is already done), and semiconductor filament (early stages of research for the last 2 years).

The person who can find out how to print using all the 5 filaments using a single device can open a door for a scalable, cheap manufacturing of day to day products.


And I need to build this 2nd 3d printer as a platform for my experiments. Later the first thing I will be trying do is to try using 3d printed motors in this design.

Code

Snappy v3 3d printer

Credits

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