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Week 5 - 3D SCANNING AND PRINTING

Week 5 goals :
individual assignment:

For this week's assignment, we had to design one or several objects in 3D,
print them,
scan something and print it if possible.
Hardware and softwares used for this assignment :
Hardware :
- 3D Printer Ultimaker 2+
- 3D Printer grabber 3I made by me and Quentin
  - Material : 2.80 mm PLA
- ultraviolet box home made
- scanner nextengine
- 3D Printer stereolithography Form 2+
Softwares :
  - cura a free software slycing
  - meshmixer program to edit mesh received by scanner 3D
  - rhino a program to edit object
  - scad cada free software for parametric design
The original program zippedhere.
and We go:

We had some difficulties this week as in the meantime we were working on our big CNC/3Dprinter 4000X4000mm


Here we dismantle the table X/Y


Here is the piece I decided to make. It was impossible to realize it subtractively. The piece is a pump piece that will use for my final nurse lift project. I used a parametrical cad


Cura is used as a slicer


We used the stereolithographic printer with transparent plastic


After printing we cleaned the piece with ethyl alcohol


We used a box in which we put a lot of ultraviolet led to secure good polymerization


I learned that the paramertric cad is useful I cut support


We took off the support and the result is really good.


We did another part of the assignment we tested prints on various printers notably Ultimaker 2+ Graber I3 form 2+


The best result was on Form 2+ and Graber I3 with PLA 1,75mm. Here I learned that the Graber I3 has a good price performance ratio


Then we used the scanner 3D to scan a simple mechanical button in Teflon


I also scanned a part of the frame of my broken glasses


I used talk to improve the scanning


I also used meshmix to rectify many errors of the scanner


I also used Rhino to rectify as many errors of the scanner I could but the result is still not sufficient to print on a 3D.I learned that the optical scanner has better performance when using talc on the surface of the part to scan