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Kühling&Kühling RepRap Industrial 3D Printer (Prototype)
At the beginning of 2013 Kühling&Kühling demonstrated a pre-production prototype of the RepRap Industrial at FabCon.3D tradeshow in Erfurt/Germany and started to accept pre-orders on the final series production model.
This revision was not actually manufactured, so these pages are for historical reference only.
Kühling&Kühling RepRap Industrial
| Durable ABS prints without warping.
Heated build chamber.
Dual extruder printhead.
Super easy maintenance workflow.
This is our RepRap-based desktop 3D printer that can reliably print objects from ABS plastic without warping – a problem well known from many desktop-grade 3D printers and RepRap designs.
The “Kühling&Kühling RepRap Industrial” has a fully enclosed frame with powerful recirculating chamber heaters that raise the ambient air temperature up to 70°C. With minimized thermal stress the printed objects adhere flat to the build platform and allow for dimensionally accurate results.
Featuring two extruders this 3D printer can print with different nozzle diameters – printing the visible outer shell of an object in fine details while saving production time on the infill structure by using a bigger extrusion nozzle. Or you can do pretty two-color prints from equal tips.
The whole machine was developed for productivity, so you can expect minimal maintenance time for several recurring tasks like swapping filament, changing nozzle tips or levelling the build base. All sub-assemblies are easily accessible so you get the job done quickly.
Spool holders on the back – plus cable mania..
Back view - cable harness waiting for new high power MOSFET driver boards to be finally wired up
One of four circulating air heatings - each providing 120W for 70°C chamber temperature
Print bed, bottom view - semi-automatic 3 point bed leveling system
Dual extruders, front view - water cooled hotend insulators
Dual extruders, back view - water cooled planetary geared stepper motors
Advanced custom cnc'd direct drive extruder gears
Front left Y end with belt idler
Left X end with stepper motor and hall-o endstop
Z stepper motor with Sugru spider coupling
Specifically aimed at printing ABS with zero warping, low maintenance effort through highly accessible sub assemblies
Rigid frame made of t-slot aluminium extrusion
Fully enclosed by acrylic and wood, doors on the front
A heated chamber capable of 65-70 °C recirculating air temperature
Heated PCB print bed
Water cooled hot-ends and extruder steppers to ensure reliable extrusion in high ambient air temperature
Fully parametric Open Source design
Dual extruders, primarily for use with different nozzle diameters for perimeters/infill to save printing time on big objects
Activated-carbon air filter to remove unpleasant smell of molten plastic
Semi-automatic print bed levelling makes calibrating the machine a matter of seconds
Z-leadscrew bearing supported on both ends, sugru spider coupling for absolutely wobble-free operation
12 mm precision ground shafts with LM12UU linear ball bearings on all axes (will be replaced by Igus RJMP, see below)
Tool-free belt tensioning with built-in thumbwheels
Direct-drive extruders with high torque geared stepper motors
Permanent printbed material (polyetherimide (PEI) glass fabric composite) – no Kapton or PET tape needed
Adjustable nozzle height to align both extruders on the same level
Custom designed, precision extruder drive gears to provide enough grip on the filament in a heated enviroment
Integrated LED lighting
All-metal hot ends from reprap-fab.org with 40 W each for short heat up time
Raspberry Pi with a 10″ capacitive touch display for ethernet enabled standalone operation
Touch optimized user interface for the raspberry pi is in development
Magnetic door locks