3D printing – What is it?

3D printing – What is it?

3D printing is a group of technologies which produce real parts from the computer data in the shortest time and at the highest possible quality. The components are fully functional and it can be so close to the final product, which can replace it in some cases.

3D printing is called Additive technology. That means the components are produced by adding material in layers which have a constant thickness. The basis of the 3D model is created in a CAD system or a three-dimensional object captured by the scanner. 
Before printing the model is cut for layers in special app for 3D printing an upload to printer.
Advantages of 3D Printing:
• Production of complex shapes
• Fast production preparation
• Price of a prototype
• High accuracy
• The possibility of further processing components (machining, grinding, …)

Disadvantages of 3D printing
• Production of a part of the conventional methods has a greater accuracy
• Not suitable for mass production
For what we are using it?

• Detect errors in the production documentation – errors from designer
• Verification of manufacturability
• Verification of assembly
• Design components
• Simulation of stress and flow
IMG_20150918_184059
STL (Standard Triangulation Language) format was developed by 3D Systems for stereolithography method. STL format converts 3D CAD model to polygon (triangular) network.
Fused Deposition MODELING

FDM method was developed and patented by Scott Crump in 1989.
The principle of the FDM melting thin wire (thermal plastic, metal, wax, etc.) in a heated nozzle which is moved by a stepper motor above the worktop. The material in the nozzle is heated to a temperature a few degrees higher than its melting point. The component is created on the board. After applying the desired layer which has a minimum thickness that depends on the type of 3D printers, the carrier plate is always reduced by the value of the layer.

Materials used:
• ABS
• Polycarbonate
• Wood + Polylactide polymer
• Sandstone + Polymer
• Wax
Advantages:
• A large amount of useful materials
• Minimal waste
• Low cost of functional prototypes
• Its properties are printed components approaching final products

disadvantages:
• Surface quality

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