5. 3D Scanning and Printing
Hero shots
assignment
group assignment:
- test the design rules for your 3D printer(s)
individual assignment:
- Design and 3D print an object (small, few cm3, limited by printer time) that could not be made subtractively
- 3D scan an object (and optionally print it)
Link to group assignment page
The group assignment page can be found on the Energylab 2024 website here
it is also embedded directly in the webpage below.
Design and 3d print
I decide to designe an object with multiple hole in his 3 axes.
for that i have design with FreeCad
to beginning i used part design, sketch and protusion to make to make the shape of the solid form
after that make a sketch on faces to make pokect
and use multiple transformation to duplicate the pocket on a line and on on face
and repeat to make pocket on the another face
final we get the final 3d objet and export it to stl file to print it
we will use prusa printer with red abs filament
on prusa prusaSlicer we define the parameter for this and print to have a more quick objet, i decide to reduce it to 40 percent
i have export the .gcode to SD carte and put it on prusa printer mk3S
that is the printer working with abs red filament
-nozzle temperature 240°c
-bed temperature 100°c
we don’t have enclosure but it was not a problem
it fix well and all print were doing good
how this object it difficult to build with traditionnal methods
The object shown in the image has several features that make it challenging to produce using traditional CNC machining:
Complex Geometry: The object includes multiple holes and cavities at various angles, requiring multiple setups and specialized tools for CNC machining. Each setup increases the production time and complexity.
Internal Features: There are internal cavities that are not easily accessible. CNC machining typically requires direct line-of-sight access to the cutting area, making it difficult to reach these internal features without complex fixturing or multi-axis machines.
Angles and Undercuts: The angled surfaces and potential undercuts in the design would require multi-axis CNC machines, which are more expensive and complex to operate compared to standard 3-axis machines.
Setup Time: Each different hole and cavity might require a unique setup or tool change, significantly increasing the production time and cost. Traditional methods would also necessitate precise alignment for each setup to ensure accuracy.
Tool Limitations: Some features, particularly small or intricately angled holes, might be impossible to machine with standard tools due to their size or orientation.
3D printing, on the other hand, builds objects layer by layer, allowing for the creation of complex geometries, internal features, and intricate angles without additional setup or specialized tooling. This method can handle the entire object’s complexity in a single build process, reducing production time and cost, and eliminating many of the limitations associated with traditional CNC machining.
Scanning
for scanning we have Sense 3D scanner
and i use it to scan my self
and make 3d object.
Files
What went wrong/what went well
Overall, everything went well. 3D thank a little time and i was afraid about ABS. Scan took time the fist and crush the computer and you may go on slowly, if not it can take no good image and you will rebegin scan