As per its name, Frame provides a basic structure to a 3D printer. All the hardware units are attached to the frame. It maintains the stability of the entire machine. The toughness and robustness of the frame provide more durability to the machine.
The manufacturers use different materials and the most common ones are the metallic frame. In the initial days of 3D printing, wood was being used for making consumer 3D printers. However, at present time metals are being used to maintain the high stability and durability of the machine.
Printing bed provides support to models where models are created. Anyone who has worked with this printer would know what a printing bed is.
The filaments or feeding materials (synthetic resin, metals, etc.) are deposited on the printing bed. It uses the layering technique to produce the complete model. The layering technique means that depositing a layer over another layer to build a complete object.
Different 3D printers use different kinds of the printing bed. Some of them use heated whereas other ones use non-heated printing beds. Non-heated type printing bed may be enough for PLA (Poly Lactic Acid) whereas for advanced material heated printing beds are recommended.
Some of the 3D printers use automatic calibration of printing beds whereas in some of the printers user needs to adjust the printing bed manually.
The extruder is a printing head in a 3D printer. It extrudes the filament (feeding material) and deposits it on the printing bed. The extruder can be segregated into two sections. The first one is “Cold End” and the second one is “Hot End”.
The function of the cold end is to lock the feeding material while pushing it gradually downwards to the hot end.
The hot end that has a nozzle attached to it at the end, maintains a temperature value that is greater than the melting point of the feeding material or filament. The hot end melts the filament that is further deposited on the printing bed.
The extruder is also built from different parts:
- Filament Drive Gear
- Heat Sink
- Heating Cartridge
- Cooling fan
Filament Drive Gear:
This part is also known as extruder drive gear. It is mainly responsible for pushing the filament into the hot end.
Heat sink unit with cooling fan ensures that the material remains still in a solid-state until it reaches the nozzle.
It is a temperature sensor. To maintain the correct value of temperature extruder uses this sensor.
The main responsibility of this part is to heat the feeding material or filament.
To build an object the melted filament is deposited. This melted filament must be cooled down for setting before the next layer gets deposited. The cooling fan is responsible to do this job.
It is the tip of the extruder. The melted filament comes out of the nozzle for deposition. There is different size of the nozzle present for 3D printers. By using the smaller diameter of the nozzle, one can achieve finer details with greater accuracy.