THE FAB ACADEMY 2014

CIRO MEJIA ELIAS


Home



1. Principles and practices, Project Management


2. Computer Aided Design

3. Computer Controller Cutitng


4. Electronics Production


5. 3D Scanning and Printing


6. Electronics Design


7. Computer Controlled Machining


8. Embedded Progamming


9. Molding and Casting


10. Input Devices


 11. Composites


12. Output Devices


13. Networking / Communications


14. Mechanical design


15. Machine design


16. Interface and application programming


17. Applications and Implications


18. Invention, Intellectual property, and Income


19. Project Development


Project Presentation


3D Scanning and Printing

Design and printing of an object

This task is to design and to print a lemon squeezer, this object can not be created by subtractive methods due to internal channels and circular shapes.

Design: The design was done in Inventor Professional, having a bit of difficulty in the handle of the juicer because it is an irregular shape, it works with the "LOFT" command.

It shows the main steps of the modeling:









Printing: the model was printed in Makerboot - Replicator 2X material "ABS", the duration of the print was 33 minutes. Makerware configuration is displayed.











General considerations of the task
  • The model needs a base, because without it the model does not adhere to the printer.

                           baseless                                                     based


Extracting the basis

  • The position of the model in MakerWare software (printer ) must be suitable for printing, use the commands to rotate, scale and move.
  • The type of file to import STL is suggest .
  • The model size should be small for the printing time.


Scanning and printing.

Two methods of scanning are considered :

1) 3D Laser Scanning : This method has higher accuracy in the shape of the object , time is much lower than other methods , it had no problems with bright colors. The equipment used was the brand EXAscan CREAFORM. It exports STL and OBJ files.



In this case printing the scan was done quickly, I only had to fix some edges with Meshmixer . The Printer Software settings had to be considered in addition to a support base for the cantilever model parts .


"In a square the support shown"
"In a circle the base is shown"


2) Scan contact : With this method an approximate shape of the object is obtained, the time is your disadvantage because it takes too long , in my case it was about 5 hours . No scans and low internal parts of the object. The equipment used was the MODELA MDX -20. The extension was STL files and IGX .


       Object stuck with double-sided tape                            Scanning softrware



                      Scan Start                                              Scan result (mesh)

In order to print this case I had to make several modifications to the scanned model .
 
a. Court symmetric model with Rhinoceros


b . Mirror model with Autocad .


Printer the model: