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Hotend
A hotend is a component used in fused filament deposition 3D printers. Its purpose is to heat up and melt filament material for depositing into the intended shape. The hotend is usually made of a bulk heat-conductive material with an internal resistive heater, coupled with a thermistor or thermocouple for precise temperature control. In common desktop 3D printer designs, the heater is located near the nozzle, and a heatsink is attached upstream (on the colder side). A heatbreak component made of dissimilar metals (bimetal) can be used to limit heat transfer to the cold filament above, increasing the controllability of the melted filament. Nozzle The nozzle is an interchangeable tip attached to the hotend with a small diameter hole through which the melted filament is extruded. In desktop fused filament deposition printers, different sized nozzle holes can be used to balance between printing speed and precision. Common large sized ones (1.0mm) extrude more material per trave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fused Filament Deposition
Fused filament fabrication (FFF), also known as fused deposition modeling (with the trademarked acronym FDM), or ''filament freeform fabrication'', is a 3D printing process that uses a continuous filament of a thermoplastic material. Filament is fed from a large spool through a moving, heated printer extruder head, and is deposited on the growing work. The print head is moved under computer control to define the printed shape. Usually the head moves in two dimensions to deposit one horizontal plane, or layer, at a time; the work or the print head is then moved vertically by a small amount to begin a new layer. The speed of the extruder head may also be controlled to stop and start deposition and form an interrupted plane without stringing or dribbling between sections. "Fused filament fabrication" was coined by the members of the RepRap project to give an acronym (FFF) that would be legally unconstrained in use. Fused filament printing has in the 2010s-2020s been the most popular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3D Printing Filament
3D printing filament is the thermoplastic feedstock for fused filament fabrication 3D printing, 3D printers. There are many types of filament available with different properties. Filament comes in a range of diameters, most commonly 1.75 mm and 2.85 mm, with the latter often being confused with the less common 3 mm. Filament consists of one continuous slender plastic thread spooled into a reel. Production Commercially produced filament 3D printing filament is created using a process of heating, Extrusion, extruding and cooling plastic to transform Nurdle (bead), nurdles into the finished product. However, unlike a 3D printer, the filament is pulled rather than pushed through the nozzle to create the filament. The diameter of the filament is defined by the process that takes place after the plastic has been heated rather than the diameter of the extruder nozzle. A different force and speed is applied to the filament as it is pulled out of the extruder to define the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extruder Lemio-en
Extrusion is a process used to create objects of a fixed cross-sectional profile by pushing material through a die of the desired cross-section. Its two main advantages over other manufacturing processes are its ability to create very complex cross-sections; and to work materials that are brittle, because the material encounters only compressive and shear stresses. It also creates excellent surface finish and gives considerable freedom of form in the design process. Drawing is a similar process, using the tensile strength of the material to pull it through the die. It limits the amount of change that can be performed in one step, so it is limited to simpler shapes, and multiple stages are usually needed. Drawing is the main way to produce wire. Metal bars and tubes are also often drawn. Extrusion may be continuous (theoretically producing indefinitely long material) or semi-continuous (producing many pieces). It can be done with hot or cold material. Commonly extruded mate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3D Printing Speed
In 3D printing, the printing speed is a measure for how much material is printed per unit of time (\text / \text). It's an important parameter for the time it takes to print, and can affect the quality of the print. Units used varies depends on the type of additive manufacturing technique. The unit of manufactured material is typically measured in units of either mass (Kilogram, kg), length (Millimeter, mm) or volume (Cubic centimetre, cm3), and the unit of time is usually measured in seconds (or sometimes hours). For example, fused filament fabrication typically uses mm/s or mm3/s, while stereolithography typically uses mm/h or layers per hour. Examples The following table compares typical speeds of some commercially relevant 3D printing technologies (updated 2020): Importance of speed for time usage 3D printing speed refers to only the build stage, a subcomponent of the entire 3D printing process. However, the entire process spans from pre-processing to post-processing sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
