5. 3D Scanning and printing¶
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)
Overview¶
The 3D printer in FabLab Kannai is Bambu Lab P1S. We test the design rules of the printer with the following test prints. We used the models provided by Fab Academy.
- Clearance
- Angle
- Overhang
- Bridging
- Wall thickness
- Dimensions
- Anisotropy
- Infill
- Orientation
1. Clearance¶
We found that a clearance of 0.2mm allows the model to move with some friction and from a clearance of 0.3mm the model moves freely.
2. Angle¶
We tested how far the print goes well without support, and found that up to 30 degrees, the model prints out perfectly.
3. Overhang¶
We tested if the angle is 90 degrees, how long the overhang can be properly printed, and found that it is at maximum 2mm.
4. Bridging¶
However, if we have support legs on both sides to make bridging, it goes as far as 20mm.
5. Wall thickness¶
Then we tested how thin a wall can be. As expected, there is no wall formed if it is less than 0.4mm, as the nozzle diameter is 0.4mm. However, we also found that a slit can be formed under 0.4mm.
6. Dimensions¶
We printed out a cube of 20mm and inner hole of 10mm, and then measured the exact size of the printed cube to be 19.8mm and the inner hole to be 10mm.
7. Anisotropy¶
When printing out a sphere like shape, if you keep the layer height uniform, then the top surface could be rough. We chose “variable layer height” and shortened the height at the top to produce a smoother result (right).
8. Infill¶
We examined what 0%, 15%, 50%, and 100% infill looks like.
9. Orientation¶
And finally we tested strength by orientation. As we expected, the model was weak in the lamination direction.