3D Printing

For our group assignment, we first characterized the Prusa printer we have by having the following test prints:
Supported overhang:

unsupported overhang and clearance

unsupported angle and unsupported bridging

wall thickness and dimensions

anisotrophy and surface finish

infill at 0%, 10%, 15%, 20%

Individual print: SpICY dICE

Initially I wanted to design a 3D printed optical guide (see this paper for reference). So I CAD-ed a cube with tubes inside, which then I decided to turn it into a dice because why not. And to make a quick prototype, I decided to print it with the FormLabs printer with clear resin. The result reminds me of the graphics of my research group's vision Radical Atoms.

So I quickly gave up on the 3D printed optical guide idea and decided to fill in the tubes with different color, and I thought this design could look nice using the Stratesys J55 printer. I rendered the "spicy dice" in Fusion and it looked pretty sick. I didn't take a photo of the printer but it's pretty amazing what it can do.

Tom showed me how to use the super powerful water jet to wash away the support material.

I wanted the translucent resin to be more see-through. After going through many grades of sanding (500 to 1500), using surface polisher, and spraying a layer of clear gloss......

Here is what it looks like!

3D Scanning

We were shown how to use the Artec scanner with the help of Zivvy, I decided to scan my hand, which could come in HANDy for later wearable prototying ;)

Then I used the software to clean up the scan. On the left is the raw scan, where you can see me hiding. I forgot to film myself editing the scan but basically I deleted some extra meshes and bodies and then smoothed the scan a bit.

End result of the hand scan with material. The hand is a bit difficult to scan because I had to hold really still, and any minor movement would cause the the scan to have weird shifts in the feature as you can see in the photo. I ran out of time to print the hand but it's coming soon!