5. 3D Scanning and printing¶
Weekly Assignment Requirement¶
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)
Have you answered these questions?
- Linked to the group assignment page
- Explained what you learned from testing the 3D printers
- Documented how you designed and made your object and explained why it could not be easily made subtractively
- Documented how you scanned and prepared an object (for 3D printing)
- Included your original design files for 3D printing (both CAD and common format for 3D printing)
- Included your hero shots
What I’ve done this week¶
Group assignment:
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)
design and 3D print an object (small, few cm3, limited by printer time) that could not be made subtractively¶
For this assignment, I created a hinge to be attached to a trash box to be created in the final-project.
The hinge I created is an object that could not be made subtractively because the moving part cannot be seen from the outside and the drill bit cannot reach to machine material.
When creating the hinge this time, I used the following tutorial as a reference
Creating a Hinge with Fusion 360
I used Fusion360 for modeling.
First I created one side of the hinge.
Create a rectangle and place three hollow cylinders as shown below
Then create the other side of the hinge.
Cut the interfering parts of the two component parts to make them work as a hinge.
Place the two hinge parts in the proper position as follows
Create a shaft
I created a gap of 0.5mm so that the hinge can be rotated
Exported the G -code with the following settings
| Name | Value |
|---|---|
| Print settings | 0.20 mm Quality |
| Print settings | Prusament PETG |
| Printer | Original Prusa i3 MK3S & MK3S+ |
| Infill | 15% |
Sliced Info
| Name | Value |
|---|---|
| Used Filament(m) | 5.87 |
| Used Filament (mm^3) | 14117.42 |
| Used Filament (g) (including spool) | 17.93 (218.93) |
| Cost | 0.65 |
| Estimated printing time (nomal mode) | 2h2m |
| Estimated printing time (stealth mode) | 2h2m |
The 3d print tester created in the group work, the bridge part failed, so I decided to print the shaft standing up vertically!
Done🔥
Since the gap was only 0.5mm, the filament in the gap hardened and could not be rotated.
Made the following adjustments and 3D print it again
The shaft of the rotation axis has been made thinner and a cylindrical support material has been added as shown below.
Exported the G -code with the following settings
| Name | Value |
|---|---|
| Print settings | 0.20 mm Quality |
| Print settings | Prusament PETG |
| Printer | Original Prusa i3 MK3S & MK3S+ |
| Infill | 15% |
Sliced Info
| Name | Value |
|---|---|
| Used Filament(m) | 5.59 |
| Used Filament (mm^3) | 13449.07 |
| Used Filament (g) (including spool) | 17.08 (218.08) |
| Cost | 0.62 |
| Estimated printing time (nomal mode) | 1h58m |
| Estimated printing time (stealth mode) | 1h59m |
The hinge worked🔥🔥🔥
3D scan an object (and optionally print it)¶
I did a 3D scan of the Namahage in the lab.
For 3D scanning, I used Qlone.
Place the object to be scanned on QLONE MAT, you can easily scan the object!
The target object on the mat is scanned from all directions, 360 degrees. When the scan is complete, the shell of the dome surrounding the object will be removed.
I was able to scan it as shown in the following video
I used the AR function of the app to place it next to the real thing.
Since the STL file size is 8.1MB, share the viewer of the design instead 🙏
What I learned¶
- I recently started using a 3D printer in the lab, and I learned a lot about the various settings that can be made in the 3D printer software.
- The accuracy of the 3D scanning app was so much better than I expected!
Links to Files and Code¶
- Hinge.f3d [.f3d]
- Hinge.stl [.stl]
- Hinge.gcode [.gcode]
- Hinge_mk2.f3d [.f3d]
- Hinge_mk2.f3d [.stl]
- Hinge_mk2.gcode [.gcode]
- Namahage(3D scan data)[.f3d]