TK300 REPRAP 3d printer with dual extruders DD2 and dual metal hotends E3D

- Ultimaker main board, will change to Rumba soon
- dual DD2 extruders, direct driving
- dual metal hotends E3D with cooling fans,Fast heat up
- lcd controller
- use prontface,cura or other opensource software
- 1.75mm ABS or PLA filament
- Fast change filament function
- Steel cabinet for power supply and electronics
- Borosilicate glass
- Mk2a 300mm pcb heatbed with 24v,can reach 140 centigrade
- building size 300*300*320mm
- layer thickness 0.1-0.4mm
- Steel side plate