Austin S Lee

HOW TO MAKE (ALMOST) ANYTHING MAS.863.12

3D ISP SCANNING AND PRINTING - week4

This week the assignment was to 3D scan and print. Here you can find the perfect tutorial on how to use Minolta and Geo Magic for the scanning. I used Minolta for my 3D scanning. The first step is to calibrate Minolta. Just as the tutorial, I clicked on "Show Live Image Window" and enabled the streaming video. Having the plastic folder on the turn table, I made sure I could see the whole spectrum of colors on my streaming screen.

3D scanning

For the actual scanning, I went through the same process. I went back to the show live image window and updated color image then clicked on the update range and color image. Now the tricky part was focusing part. At first I only saw the silhouette of my object and the background was showing the range of color. I unchecked auto-focus and changed the distance until my object was showing the whole color spectrum. I clicked "scan" when I was ready.

Cleaning and Modifying The Scan

I found noise captured from the turntable surface. I cleaned them up by drag/select and deleting them. I repeated until it was all cleaned up. Then I went to "Point" navigation bar on the top and selected Reduce Noise. Afterwards, in the same navigation bar and merged my scanned object. On the left hand side, I selected the merged file from my list of scanned parts and navigated to the "Polygon" bar and pressed Clean. The next step was filling in the holes. In Polygon there was a function called Fill Holes. Once I was ready I exported my file as STL binary fie.stl. Key trick to reduce the size is to go to Polygon and click Decimate and reducing it to 50%. Now using the trial version of Rhino OSX I opened up the STL file and edited the design a bit. After editing my model, I exported it again into an STL binary file. My file was sent to 3dprint[at]cba.mit.edu for the final printing. (At the lab, we would usually confirm with Tom and John before we send our files.) The following image is the result.

FINAL PROJECT PROPOSAL.
My ideas for the final project- week1

PRESS-FIT CONSTRUCTION KIT.
Learn how to make something using vinyl cutter and laser cutter - week2

FAB ISP (IN-SYSTEM PROGRAMMER)
Learn how to make a custom PCB - week3

3D SCANNING AND PRINTING.
Learn how to make 3D printed model - week4

ELECTRONICS DESIGN.
Learn how to redraw the echo hello-world board - week5

MOLDING AND CASTING.
Learn how to design a 3D mold, machine it, and cast parts from it - week6

EMBEDDED PROGRAMMING.
Learn how to program a custom board to do something - week7

MAKE SOMETHING BIG.
Learn how to make SOMETHING BIG through computer-controlled machining- week8

INPUT DEVICES.
Learn how to add sensor to a microcontroller board and read it - week9

COMPOSITES.
Learn how to assemble a 3D mold, and lay up a fiber composite part in it - week10

OUTPUT DEVICES.
Learn how to add an output device to a microcontroller board and program it to do something - week11

INTERFACE AND APPLICATION PROGRAMMING.
Learn how to write an application that interfaces with an input &/or output device - week12

NETWORKING AND COMMUNICATIONS.
Learn how to build a wired &/or wireless network with at least two nodes - week13

MECHANICAL/MACHINE DESIGN.
Learn how to design or modify a machine and automate the machine - week14

FINAL PROJECT.
My final project for How To Make (almost) Anything - week15, 16

MAS.863
Learn about the How To Make (almost) Anything course at MIT