3D Scanning and printing.

Fifth week

In this week concern we must create and scanning 3D objects and print them.
The subject that I choose for 3D drawing and printing was a karambit training knife.
I'm a student of Kali philipine martial arts and karambit was one of they're weapons.
This weapon is not simple to find in my country, and I always wanted to try it, so I decided to try to riproduce the model.
The object cannot be milled just because it have a "cone" shape from the lateral view, and if it was placed on a plane, the mill wasn't able to make a regular finger hole.

The machine used was the Delta Wasp 60 100.

File Here.

The first step of my work consist in the insertion of a background image with "visualize-background bitmap" to reproduce her silouhette easilly.
In the second step I used 3 different size/level perimeter and made a structure for delineate a better round board.

After that I made the board with "network surface" and extruding a cylinder for the hole.
Elena from fablab gave me some good tips, and for final adjustmentsI used a "variable radius junction" (for round the boards easilly) and cutting the top and bottom to obtain a triangular aspect in front view.

Than I've just selected my form and "exported selection" in STL format.

To export my file in the printer format I've downloaded/installed Cura.

I setted the machine with those parameters:
Width: 400
Depth: 400
Height: 700
Brim amount: 5
Machine speed: 70%
Temperature: 185°C.

[I started with machine speed 100% but it missed little parts, so I decreased it.]

Printing process:

Before the operetion we usually cover the surface with hair spray, to improve the adherence.



3D Scanning.

For the 3D scanning I used Sense.
I've find the program pretty intuitive, I downloaded it and installed without problems.
The scanning process gave me some troubles instead. As subject I used a mushroom painted by the character designer Tania Sandroni.

After several times I tryed to rotate around it I get an idea. As first I used a moving chair to rotate it better, and than I placed an other object with him.


The object (a cube) helped the camera to catch the rotating process for a better result!





Copyleft © Alessandro Patrizi 2016