3.1 3D Printing

3.2 3D Scanning

GROUP WORK

TRIALS & TRIBULATIONS

LESSONS LEARNED

Softwares: Fusion360, Rhino, Bamboo Slicer Devices: Bamboo - PS2
Materials: PLA Matte Black, PLA Matte White
Files: NativeMini.f3d Cowrie_Shell.stl , CowryBangle.f3d

Softwares: RevoScan, Revopoint Pop 2 Scanner Devices: Phone, Revopoint Scanner
Files:NativeMini.mov, ShangtaoScan.mov

Mesh Modeling and Holes - while importing STLs I had issues working with the meshes... a lot of them were extremely high resolution which blew up my file size and made editing extremely difficult. I found that lowering the poly-resolution and converting the mesh to an object was the easiest way to incorporate outside models into my design!

Sketching your ideas out really helps with the CAD process
Try to use .OBJ files for online imports and ALWAYS check file size
Use other softwares to accomplish what you can’t on Fusion
Always check if the infill makes sense, especially if the piece is small!

Architecture Assignment 3 Group Work

First thing I scanned was my bag deodorant! I was told that the RevoScan app was not great at scanning small objects, but my scan turned out pretty good! I was not able to export any files (I only have the free version ;-;), but recorded videos of the scans.

The first thing I CADed was my mini deoderant that I scanned! I used Fusion360, and just eyeballed all the sizes.

I was inspired by these types of thick metal vintage arms pieces to create bangle jewelry. Cowrie shells have historically been used as currency in a wide range of cultures, including the African cultures of Mali and Oyo, Shang Dynasty China, and parts of South East Asia. Now, cowrie shells are regarded as symbols of wealth and good luck charms.

We also tried scanning Shengtao’s head. I was very surprised that the scan also picked up the rest of the room and as well as other people. I think in the future, it’s important to have a more simple background if I were to do larger scans.

As an architecture group, we used Revopoint with Gert to scan Stasya’s toy, Miffy! It had issues picking up the metal keychain attachment ring, and I suspect it was because of the reflectivity of the metal surface. Gert also mentioned that clear plastic had a hard time scanning. It was really awesome that the kit included a turning table, because I had a hard time taking straight pictures with the hand-held app.

NATIVE MINI DEODERANT

COWRY SHELL BANGLE BRACELET

PRINTING: ROUND 1 (FAILURE ;-;)

PRINTING: ROUND 2 (SUCESS)

I started a CAD file in Fusion, approximating my wrist size, and downloading a basic cowrie shell mesh from LennyFace on Thingiverse.

Then I fit some sphere embellishments around each shell, making the center ones larger. I debated adding cut outs or spherical embossing along the background of the cuff, but ultimately decided to go for the more simple look.

I printed both of them on the same plate on Bamboo Slicer and made adjustments to the settings that I thought were appropriate for this type of print, such as a 5mm Brim for better bed adhesion, and added tree supports. Tree supports were the best option because they are the easiest to remove and leave less rough markings on the print. I also oriented the bangle to be printed facing upright so that the visible part of the piece would be most smooth.

Print Time: 3h4m | Material: PLA Basic Matte White | Support: Tree (default) | Infill: 15% | Brim: 5mm outer | Nozzle: 4mm

It failed!!!!! ;-;

So i took a look at the print to see where it stopped and then reopened Bamboo Slicer.

I realized it was an infill issue: Internally the shells were not infilled enough with the 15% infill, it was only printing out the walls before trying to fill it in, causing it to fail by extruding material on no support. By increasing the percentage to 40%, the shells are now infilled enough to print without leading to a spaghetti error!!

The print worked out!! I was very happy about the thickness and overall look, and I think if this were a larger project I would’ve lived to sand it and spray it silver. The cowrie shell meshes printed out well, but a little grainy (nothing some sanding can’t smooth out!), and the tree supports were extremely easy to remove with a pair of wire-cutters! I also reaaaaally over estimated how large my wrists are... the bangle does not sit well at all and is almost x2 longer in width...

The deodorant ended up well too! Since the infill was increased, it did feel noticeably denser my usual prints!