3D Scanning and Printing

Scanning

My first attempt on the right was unsuccessful because the camera was out of focus, and I didn't take enough pictures. During my second try, I was able to achieve much clearer results. I did not use a turntable; instead, I moved around the object to capture images. I'm unsure how to document the bottom of an object, as the app automatically takes photos at specific intervals and requires a matte finish and evenly lit surface to eliminate harsh shadows. I found it difficult to capture just the object, I often got the surrounding area/surface included. The most intriguing aspect of this process is the level of detail in the images; however, I don't believe it would be wise to use this method for capturing a precise, detailed piece.

Apparatus: iPhone 14 Pro (v18.6.2)
Software: Polycam 3D Scanner, LiDar, 360 (v5.1.7)

Printing

3D Printer: Prusa i3 MK3S+
Filament: Polymaker's PolyLite PLA in Magenta
CAD Software Application: Autodesk Fusion (macOS 14.6.1)

3DBenchy Results

I printed without making any changes to the default settings on either the slicer or printer.

- No stringing observed
- Door frame tops showed slight drooping on the final layer
- Fine text details were somewhat lost/unclear
- Hull layers weren't perfectly aligned on the sides
- All features printed successfully without supports
- Slicer warned about potential bed adhesion issues, but print adhered fine

Printing

- Print orientation significantly affects part strength
- Different colors of the same filament type may change dimensional accuracy due to temperature variations

Results from group tests for printer accuracy

Designing

- Keep calipers or a ruler nearby when designing to help visualize scale accurately
- File organization: Keep all bodies in the same folder for proper object storage
- Fixed extrusion angle issue: In the extrude menu, set the "taper angle" to zero degrees (was automatically creating angled extrusions)

I tried to create a print-in-place hinge as my non-subtractive design. Initially, I followed a YouTube tutorial and successfully completed fig. 3. Attending Alfonso's office hours helped me gain a better understanding of how to navigate Fusion 360. As a newcomer to CAD, I don't know what I don't know, so I really appreciate the generosity of the TAs.

During the session, Alfonso guided me through an alternative method for creating the hinge, which involved using different sections in “Sketches,” extruding them, and setting parameters for the dimensions (fig. 1, fig. 3). I then attempted to replicate his version on my own, but ended up with something that looked quite different (fig. 2).

Hinge Results

Fig. 3 works! Its a little ugly around the bottom curve of the tab.

Fig. 4 did not work, then I increased the tolerance and it worked. I tried different ways of placing it on the bed but the prints failed.

Download fig. 2
Download fig. 3
Download fig. 4
3D Benchy test Print of my Hinge
Hinge design sketch
fig. 1
fig. 2
fig. 3
fig. 4