5. 3D Scanning and printing¶
This week I worked on 3D Scanning & Printing. We learn how to scan/numerise physical object on computer. It’s just amazing to see how technologie is advanced.
Assignement requirements¶
Group assignment:
- Test the design rules for your 3D printer(s)
- Document your work on the group work page and reflect on your individual page what you learned about characteristics of your printer(s)
Individual assignment:
- Design and 3D print an object (small, few cm3, limited by printer time) that could not be easily made subtractively
- 3D scan an object (and optionally print it)
Group Assignement¶
Here you can fin the link to the group assignement.
Useful links¶
- Einscan Pro 2x
- EXScan Pro
- Solid Edge
- Ultimaker Cura Slicer
- Anycubic Photon Workshop
- 3D Builder Microsoft
Individual assignement¶
Hero Shots¶
Scanning
3D printing
3D Printing¶
3D Printer Test¶
For the 3D Printing part I use 2 different printers to compare the results and see whiwh is the best. so I fisrtly download a 3D model for testing many configurations of the 3D printing to see if there is a problem with the printers or not. Here is the link to download the file. The machines i used : Ultimaker 2+ and the famous standard Ender 3 Pro.
Overhang tests are designed to evaluate how your printer manages parts of a model that extend into space without direct support underneath. This can help calibrate support settings, extrusion temperature, and cooling.
Results after printing¶
This test is a proof that my printer is 100% ready for printing complex bodies !!!
Design 3D Object for printing¶
For the object design i use Fusion 360 to design a Swiss Cube which is a complex structure that could not be made substractively.
First I define the parameters to help me make an parametric design adjustable.
Create a sketch. Then draw a square with a constraint between the origin and the middle of a side of the square.
after that draw a cicle with the hole diameter parameter, draw another circle with a diameter of hole diameter + distance beetween holes and make it with constructive line
Now constraint the construction circle to the sides of the square with the tangent constraints to help you positionning the holes
I extrude my sketches with a two sides symetric extrude. Select the square and the hole to extrude all the cube
We will now creat the first hole by left click maintaining on the circle, select profile and then extrude cut two sides symetric
Generate rectangular pattern in two directions and fill the the informations with the parameters corresponding
Tadam ! Holes generated.
To helps me to duplicate the hole on the four faces remaining, i create a axe with the construct function Axe through two Points and select the points in diaonal
I can now use a circular pattern to generate the holes on the four faces remaining using the axe i just create with the contruction
Works is Done !!!!
Until the design is finished, i send th design to my slicer software by using fusion directly with the interface 3D printing in the menu file. Just selct the body you want to print, select the software you wanna used and the click on ok and it will send it to the slicer autmatically. For my part i use Ultimaker Cura
I configure my printing and save it on the removable disk and send to the 3D printer
FDM 3D printing Advantages & Limitations¶
FDM (Fused Deposition Modeling) 3D printing has both notable advantages and limitations. Advantages:
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Material Efficiency: FDM printers generally produce less waste as they only use the material necessary to build the model plus any required support structures【9†source】.
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User-Friendly: They are considered among the easiest to use, making them popular among hobbyists and in education settings【9†source】.
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Cost-Effective: FDM printers tend to be less expensive compared to other 3D printing technologies. This cost-effectiveness extends to the materials used, which are typically less pricey than those required for more industrial 3D printing methods【9†source】.
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Variety of Materials: FDM printers can use a wide range of materials, from basic plastics like ABS and PLA to more advanced composites that incorporate materials like carbon fiber for enhanced properties【9†source】.
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Safety and Accessibility: The printing process is generally safe and the printers can be operated in various environments, including at home or in schools【9†source】.
Limitations:
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Lower Resolution and Accuracy: FDM printers may not achieve the high resolution and accuracy of other 3D printing technologies like SLA or SLS. This can be a drawback when precise detail is necessary【9†source】.
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Visible Layer Lines: The layer-by-layer approach can leave visible lines on the final product, which might require additional post-processing to smooth out【9†source】.
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Limited Complexity: While FDM can handle a range of geometries, it struggles with objects requiring intricate details or very fine internal structures【9†source】.
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Material Properties: Materials used in FDM may not always match the mechanical properties of those crafted through traditional manufacturing methods, which can limit the functional application of the printed parts【9†source】.
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Support Structures: Overhangs and undercuts need support structures during printing, which may waste material and require labor-intensive removal post-printing【9†source】.
These aspects frame FDM 3D printing as a versatile and accessible technology, suitable for many applications while highlighting the trade-offs in resolution and material performance that come with its lower cost and ease of use.
3D Scanning¶
Post Proces¶
TroubleShooting¶
Filament grinding problem !!!
What’s is Grinding Filament ?
Most 3D printers uses one of two small drive gear to grabs the filament and pressed it against another bearing. The drive gear has sharp teeth that allow it to bite into the filament and push it forward or backward, depending on which direction the gear spins. If the filament is unable to move, yet the drive gear keep spinning, it can grind away enough the plastic from the filament so it will be stripped & causes clogging.
I failed printing again and again and again until i find the solution.
Solution find and it finally worked !!!