Note: affected by corona virus, many flights have been cancelled, the cargo are waiting for flights in line,
so shipping time will be longer than before, sorry for your waiting.

 

3D printer Parts

I will show you the printer parts and the characteristics of our FDM
large 3d printing machine.

FFF / FDM 3D Printer parts

Extruder

Some manufacturers just call it an extruder, some call it a tool head and others call it an extruder block. Fact is that all FFF / FDM large 3D printer have an extruder and they all consist of multiple parts.
When we’re talking about a direct drive extruder, the extruder contains a motor which makes it bigger and more like a ‘block’. If the printer has a bowden type extruder, the motor that moves the filament is placed somewhere in the back of the printer’s frame.

Extruder parts

  • Fan
  • Thermistor / thermocouple
  • Heater block / hot end
  • Nozzle

Extruder Fan
A fan is necessary to gradually cool down the melted filament. Optimizing the air flow is an underestimated aspect of 3D printing and is needed to achieve great 3D prints.

Thermistor / thermocouple
Thermistors and thermocouples are temperature sensors. A thermistor is usually more accurate than a thermocouple, but thermocouples can handle higher temperatures. An FFF / FDM 3D printer only uses one of these in the extruder – not both – and most desktop 3D printers nowadays use a thermistor instead of a thermocouple. Measuring an exact temperature is important because a difference of a few degrees can already have a great impact on your print results.

Hot end / Heater block
The heater block or the hot end are the parts of the extruder that get hot enough to melt plastic. When you are wondering what materials a certain 3D printer can print, you look at the maximum hot end temperature. A 3D printer with a max hot end temperature of 200°C can not print nylon because nylon has a melting point of 214°C.

Nozzle
At the end of the extruder you will find the nozzle. Nozzle sizes typically range from 0.15 mm to 1 mm. The most commonly used size is 0.4 mm. And yes, a smaller nozzle gives smaller details.

Bed

The bed is the platform the object is printed on. Both the surface and the temperature of a bed determine whether a printer is able to print specialty materials or not. Most of the time a bed is made from borosilicate glass, aluminium or acrylic.

Heated bed

For some 3D printing materials, a heated bed is recommended / required. ABSand Polycarbonate require a bed temperature of at least 90°C. When you buy a 3D printer with a heated bed and safety is an important aspect, it is best to limit your search to 3D printers with a closed printing environment.

Print surface

Besides a certain temperature, the print surface of a bed can make a lot of difference in both getting a print to stick and removing a print from the bed. Popular print surfaces are PEI and BuildTak.

Are you have a better understanding of FDM 3d printers now? If so, our independent dual extruder 3d printers are very suitable for you! It has the reasonable price and excellent quality, i believe you will be satisfied with it. Any confusions, contact us without hesitate! Send email to: xinke3d@gmail.com.