3D printer - All about

3D printing works with a hot nozzle
3D printing works with a hot nozzle

3D printer (2)

3D printing works on the principle of a hot nozzle, guided on 3 axis compared to the piece, which heat and mechanically removing a thread of material plastic (ABS or PLA are the most used) by successive layers on a plate. The CAD estdecoupe in 2D print layers model.


The general principle is quite similar to that of a conventional 2D printer
3D printer
3D printing is an additive production technique developed for rapid prototyping. Its goal is to quickly and easily generate a physical piece. Different materials can be used, more generally ABS plastic, PLA plastic, and metal, but also wax, or even plaster.
The applications of 3D printing are varied, but in all cases aim to concrete visualization of projects, or verification of parts ergonomics. 3D printing works
, i.e. to leave a template created on one computer and give a physical representation, concrete.
CAD (computer aided design), 3D printing from a file allows the user to produce a piece (through software that cut sliced) in filing or solidifying material layer by layer, which allows to get a physical part in 3D.
The printing time, variable depending on the room volume and print speeds, is a few hours.
The transmission is ensured by a system of transmission belt / wheel gear and step-to-step motors.
The transmission is ensured by a system of transmission belt / wheel gear and step-to-step motors.

Prusa Mendel

- Type of structure : triangular
- Geometry of beams : threaded tubular
- Guide/transmission :
-On X : movement of the nozzle, with 4 pivots slippery (= zipper), achieved through 2 smooth stems oriented in a horizontal plane. The transmission is ensured by a system of transmission belt / gear.
-On Y : movement of the plateau, with 4 pivots slippery (= zipper), achieved through 2 tigeslisses. The transmission is ensured by a system of transmission belt / gear.
-On Z : movement of the nozzle, with 2 pivots slippery (= zipper), made with 2 screws and 2 stems smooth, oriented vertically. The transmission is ensured by the threaded system.
- Accuracy : All guides are fixed by clamping. Vibration may cause loosening so a reduction in accuracy.
- Fixing : The MAP is provided by nuts and washers. RP stem clamps are Mylar tighten the frame.
- Achievement : Printer
3D printer
3D printing is an additive production technique developed for rapid prototyping. Its goal is to quickly and easily generate a physical piece. Different materials can be used, more generally ABS plastic, PLA plastic, and metal, but also wax, or even plaster.
The applications of 3D printing are varied, but in all cases aim to concrete visualization of projects, or verification of parts ergonomics. 3D printing works
simple to build, modify and repair (use of elementsstandards and non-complex parts).
- Motors : 4 Motors-not NEMA 17 to ensure the transmission and an engine down the wire into the nozzle (extrude).
- Price : Between 500 and €600 (homemade).
Editing a Wallace is quick and easy
Editing a Wallace is quick and easy

Wallace and his step-to-step motors

- Type of structure : rectangular 2D
- Geometry of beams : threaded tubular
- Guide/transmission :
X : Movement of the nozzle, with 3 pivots slippery (= zipper), achieved through 2 smooth stems oriented in a vertical plane. The transmission is ensured by a system of transmission belt / gear.
On Y : movement of the plateau, with 4 pivots slippery (= zipper), achieved through 2 smooth rods. The transmission is ensured by a system of transmission belt / gear.
Z : Movement of the nozzle, with 2 pivots slippery (= zipper), made with 2 screws and 2 smooth rods, oriented in a vertical plane. The transmission is ensured by the threaded system
- Precision : The structure is light. The parallelism of the Guide on Z rods is very accurate because PIM is provided by a threaded rod. All the guides are fixed by clamping. The vibrations can cause loosening of the guides, so a reduction in accuracy.
- Fixing : Bad transmission on Z because the PID of the threaded rod is valid only on one of its ends. Therefore, there is no MAP on the top of the threaded rod.
- Achievement : Installation is simple and quick. Most of the non-normalisees parts are 3D printing.
- Motors : 4 Motors-not NEMA 17 to ensure the transmission and an engine down the wire into the nozzle (extrude).

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