3D Printer

I built this 3D printer using mostly recycled parts, such as guides and belts recovered from old printers as well as the 12 V power supply.

It is a classic cartesian 3D fused filament printer that I was able to create thanks to the information made available by the RepRap project, before they were widespread as they are today.

With this printer I made the parts that make up my MPCNC.

The extruder was initially of the J-Head type, now replaced by an E3D metal extruder:

The extruder motor is a stepper motor:

On the Z axis there is a module mounted, to which are connected the extruder motor, the extruder with the relative temperature sensor and the fan:

The filament is held against the driver by a bearing pushed by springs:

The driver is made with a toothed wheel with straight teeth:

And its motion is reduced compared to that of the motor:

The filament spool rotates on bearings placed on the printer:

The heated bed is a PCB:

And it can be leveled thanks to screws and springs:

The axes guides are made with nylon bushings inserted in tubular steel:

The axis movement is belt driven:

There are adjustable belt tensioners:

And optical limit switches on the axes:

The guides are 8 mm round bars recovered from old printers:

The square profiles of the frame are screwed together in order to have a good rigidity of the structure even without reinforcements:

The electronics is a Generation 7 and mounts an ATmega microcontroller:

The four axis drivers are DRV8825:

I added an external control panel to the electronics:

Electronics, motors, heated bed and hot end are powered by a 12 V computer power supply: