Large 3D Printer

Large volume 3D printer

Build volume of 300x300x400mm

Overall dimensions:
X520-Y620-Z640

Built mainly with aluminum 20x20 and printed parts with a optimized and lightweight design.

The extruder is an MK8. For a future design I would like to use a "Bowden" type.

The Y carriage with hot bed could be optimized more its weight by cutting the aluminum sheet that holds the hot bed and using a 3mm glass, although it works well for me as it is. The engine pap of the Y carriage could be one of 1.7 A although I have changed it to one of 2 A to improve the dynamics.

All the commercial elements except for the aluminum profiles and the chrome bars I have bought them on Aliexpress.

BOM:
2 Screw and nut THSL-500-8Dx1
Aluminum Profile 20x20 Type I Slot 5mm - 2x530; 3x360; 2x580
50 Nut Profile 5 tipo-I [M4]
8 Linear Bearing LM8UU 8x15x24
4 Linear Bearing LM10UU 10x19x29
2 Chrome Bars 8mm - L445mm
2 Chrome Bars 8mm - L530mm
2 Chrome Bars 10mm - L530mm
2 tubes of diameter 9.8 x 595mm
2 Coupling 5x8
1 Pulley GT2 6mm 20 Dientes eje 5mm
1 Free Pulley GT2 6mm 20 Dientes eje 5mm
1 M Belt GT2 6mm
1 Pulley GT2 10mm 16 Dientes eje 5mm
1 Free Pulley GT2 10mm 20 Dientes eje 5mm
1 M Belt GT2 10mm
1 GT2 Timing Belt Fixing 9x40mm
1 steel shaft 5mm L18mm
1 steel shaft 5mm L19.5mm
1 Hot Bed Support Aluminium 324x324x3
1 Hot Bed 328x328x3
1 Hot Bed Glass 310x328x4
4 Rubber feet
1 Extruder MK8 con Motor Nema 17 1.7A
1 Motor Nema 17 2A 59Ncm (eje Y)
1 Motor Nema 17 1.7A (eje X)
2 Motor Nema 17 0.6 A (eje Z)
4 Driver DRV8825
1 Ramps 1.4 Shield
1 Arduino Mega
1 RepRap LCD full graphic smart controller
1 Power Supply 24V 20A
1 Fan 80mm 12v
1 Step Down Converter 24v to 12v / 9A 300W
1 Fan 40mm 12v
1 Relay Socket 12Volt 40A
1 Switch 250 v 15 A
3 Limit switches
Wires
1 Cable Chain 10x20mm L0.5m
1 Cable Chain 10x10mm L0.5m
M3 Screw Leveling Spring
Bolts M4 different lengths
Nuts M4
Bolts M3 different lengths
Nuts M3
PLA Filament 1 kg

Edit 20-04-2018: The file Frame_Hot_Bed_mod.stl is added. It is the aluminum sheet that holds the hot bed

Update 04-25-2020: Modification of the electrical box: the box is separated with the electronics and the LCD screen, and the power supply is removed outside.
Diagonal reinforcing bars are added.

Print Settings

• Printer:

  Bq Hephestos 2

• Rafts:

  No

• Supports:

  No

• Resolution:

  0.2

• Infill:

  20%