Assignment

Design and 3D print an object (small, few cm)that could not be made subtractively
3D scan an object (and optionally print it)

Group assignment : Test the design rules for your 3D printer



What I did

  • Learned the Basics of 3D printing
  • Learned how to set up and troubleshoot the machine
  • Designed 2 models in Fusion 360
  • Sliced and generated Gcode in Cura
  • 3D printed it in Ultimaker 2+
  • Scanned two objects using Kinect Xbox 360
  • 3D printed the scanned object

3D PRINTING

3D Printing is an additive manufacturing process that creates a physical object from a digital design. There are different 3D printing technologies and materials you can print with, but all are based on the same principle: a digital model is turned into a solid three-dimensional physical object by adding material layer by layer. In an additive process an object is created by laying down successive layers of material until the object is created. Each of these layers can be seen as a thinly sliced horizontal cross-section of the eventual object.(Source :- https://www.3dhubs.com)


How 3d printing works


Stereolithography(SLA)

This process that converts liquid plastic into solid objects.

How STERIOLITHOGRAPHY works

These 3D printing technologies are also available in desktop 3D printers. Materials are limited to resins, but new varieties have appeared recently providing strength or flexibility to the final objects.SLA and DLP 3D printers produce highly accurate parts with smooth surface finishes and are commonly used for highly detailed sculptures, jewelry molds, and prototypes. Because of their relatively small size, they are not recommended for printing large objects.(Source :-https://www.3dhubs.com)




Fused-deposition molding (FDM)

This process that converts liquid plastic into solid objects.

How FDM works

The FDM printing process starts with a string of solid material called the filament. This line of filament is guided from a reel attached to the 3D printer to a heated nozzle inside of the 3D printer that melts the material. Once in a melted state, the material can be extruded on a specific and predetermined path created by the software on the computer. As the material is extruded as a layer of the object on this path, it instantly cools down and solidifies – providing the foundation for the next layer of material until the entire object is manufactured.(Source :-https://www.3dhubs.com)




Material Jetting (PolyJet and MultiJet Modeling)

How PolyJet and MultiJet Modeling works

The FDM printing process starts with a string of solid material called the filament. This line of filament is guided from a reel attached to the 3D printer to a heated nozzle inside of the 3D printer that melts the material. Once in a melted state, the material can be extruded on a specific and predetermined path created by the software on the computer. As the material is extruded as a layer of the object on this path, it instantly cools down and solidifies – providing the foundation for the next layer of material until the entire object is manufactured.(Source :-https://www.3dhubs.com)




Selective Laser Sintering (SLS)

How SLS works

Selective Laser Sintering (SLS) uses a laser to melt and solidify layers of powdered material into finished objects.


Printing Materials


The material used will affect the mechanical properties and accuracy of the printed part, but also its price.Table of materials used in an FDM printer is given below:

How SLS works