Week 5: 3d Scanning and Printing¶

Group assignment:

Test the design rules for your 3D printer(s)

Document your work on the group work page and reflect on your individual page what you learned about characteristics of your printer(s)

Individual assignment:

Design and 3D print an object (small, few cm3, limited by printer time) that could not be easily made subtractively>

3D scan an object (and optionally print it)

Group assignment:¶

We enter the Ultimaker Cura page and download the software We click on download ultimaker cure We install the Ultimaker Cura software and choose the type of printer, which is Anycubic Kobra We are located in the repository to download the files in .stl format https://academy.cba.mit.edu/classes/scanning_printing/index.html We load the file from downloads We press the flatten command so that the object is flattened on the bed We choose the material that we are going to use, which is PLA We verify the scale where the parameters in the z axis are 2 cm, y axis 1.5 cm and z axis 2 cm We activate support We click on segment and we see that the printing time is 16 min and we save the file in gcode format We load the gcode to the 3D printer We carry out the same process with the other files

We have made the print with luminous PLA and at night it stands out green, it is fabulous. collaborative work with colleagues

Individual assignment:¶

The onshape program was used to create a sphere inside a cube

first a square of 50 millimeters was created

We apply extrusion to the cube and put 25 millimeters

We generate a new sketch and we create a circle then we extrude there we put delete for everything and second final position

if we rotate it it is displayed in this way

Again we create another sketch we put a distance of 48 millimeters

We generate a new sketch and we create a circle then we extrude there we put delete for everything and second final position

Then we create a circle inside the cube of 50 millimeters

Set axis of revolution to line

changing color looks like this

We enter the Ultimaker Cura page and download the software

We click on download ultimaker cure

We install the Ultimaker Cura software and choose the type of printer, which is Anycubic Kobra

I import the exported file in stl format. Here we can modify the dimensions, for example, the size percentage is lowered to 70% and the printing time is 2 hours 11 minutes

Now we use the anycubic cobra 3d printer

In our case, the extruder was heated to 200º Celsius and the bed to 60º Celsius. Start of printing

The 3D Printer turns on, then you press the Ready tool and click on automatic leveling and we choose the z axis in offset, we go down until it is 1 millimeter above the bed, you level it with a piece of paper

The printing was tested in the Fab Lab of the Scientific University of the South using the Prusa printer

To scan use my cell phone with 100 photos then install the Meshroom program

3D scanner

For the scan we will use a Matter Form brand 3D scanner for which once we install and turn on and place the object on top We open the program and create a new project We click on new scan We can observe the object and on the left a black platform where we can go up levels according to the size of our object, it is here that we have to cover our object to be scanned with a black cardboard, otherwise the scanner scans the contour points and does not we want that, then we click on scan We verify that the scanner platform is turning and starts scanning and the image is displayed on the screen It is displayed that there are black dots, that are the pixels of the contour that we can delete after scanning by clicking on the image more and delete it Once finished we scan from the side so that the upper part of the object is scanned The process is finished and we join the 2 images We can see that the object is finished scanning

CONCLUSIONS¶

Learned¶

I learned how to use the 3D printer, calibrating the axes. I learned how to place the PLA filament I learned how to use the Ultimaker Cura software I learned to scan small objects

FILES¶

cubo_impresion

Last update: April 19, 2024