- Assignment 05
3D Scanning and Printing
This week I designed and 3D printed an object that could not be made subtractively and I 3D scanned the full body of a my friend.
I started with the gears to draw it. With GearTrax I generated the crown and one of the planets in Solidworks.
For each gear I added a spacer, where it will stay the tube, then I mirrored the gear and chamfered to facilitate printing and avoid attachments between the parts.
I also added the holes to the crown to let the tube pass and some elements to be able to block it.
This is the final result.
To print I had to convert the STL exported by Solidworks into a file format that the machine can read it, namely gcode. This step must be done with a slicing program, I chose Cura 3.2.1 because the 3D printer that I used is an Ultimaker 2+ of the same vendor.
To avoid interference between the pieces I have added the parameter Horizontal Expansion and I set it to -0.2mm.
To print is very simple, after turning on the printer I inserted the SD card and from the menu I selected my file. The rest is done automatically by the printer.
I was able to insert the tube with great effort and this is the end result.
Unfortunately the pump didn't work, I find it hard to rotate and suck the water. I think because the pipe I used is not suitable.
First of all, I selected from the software the type of scan I intend to do in order to automatically optimize the parameters. Then I select Person -> Full Body. I did several tests of light and distance and I got the best results in a neon-lit room are about 70-80cm of the sensor from the subject.
To scan I pressed Play and I started to turn around the subject are waiting to keep the same distance.
Very important is to solidify the meshes.
Before saving the file I performed some Crop, Erase and again a Solidify.
The file that is saved is a binary PLY.download full-body 2,25 MB (.ply)
Since the resulting file is not usable for printing, I converted it to STL with Rhinoceros simply by importing and exporting.
More info on the Opendot group assignment page.