5. 3D Scanning and Printing
It's time to learn how to scan and print in 3D.
Group assignment
We've printed several design rules to test our 3D printers.
Our Fab Lab's 3D printers

- 330 x 240 x 300 mm build volume
- Composite-ready dual extrusion
- Award-winning touchscreen UI
- Click and print with 280+ materials

- FDM fused deposition molding
- print volume of 480 x 480 x 490mm
- Maximum hot end temperature less or equal to 260°C
- Heated print platform max temperature less or equal to 60°C
- Bed leveling: CR Touch Leveling
- Filament diameter: 1.75 mm
- Industrial-grade Circuit Board

- FDM fused deposition molding
- print volume of 350 x 350 x 400mm
- Maximum hot end temperature less or equal to 260°C
- Print platform max temperature less or equal to 110°C
- Printing material : PLA, ABS, Soft glue, Wooden, Copper containing, Gradient, etc.
- Filament diameter: 1.75 mm
How to prepare the 3D printer
We've learned to turn on the machine, to place the filament and to add the file with SD card (for the Creality printers) or directly with wifi (for the Ultimaker).



Software
As 3D print software we use Cura.
Clearance test on the Ultimaker S5
The first attempt without supports failed.
- Printing material : PETG
- Filament temperature : 205°C
- Plate temperature : 60°C
- Print speed : 80mm/sec
- Infill : 10%
- Layer height : 0.4mm
- Plate adhesion : skirt

We added the supports.

The second attempt was a success but printing in PETG made the cleaning hard and the final result is kind of messy.


Angle test on Ender-5 Plus
We've pritned the angle test on one of our Ender-5 Plus and everything went well.
- Printing material : PLA
- Filament temperature : 205°C
- Plate temperature : 60°C
- Print speed : 80mm/sec
- Infill : 10%
- Layer height : 0.4mm


Bridging on Ender-5 Plus
The bridging test printing went also well.
- Filament temperature : 205°C
- Plate temperature : 60°C
- Print speed : 80mm/sec
- Infill : 10%
- Layer height : 0.4mm


Dimensions on Ender CR-10
The dimensions test went well too.
- Filament temperature : 205°C
- Plate temperature : 60°C
- Print speed : 80mm/sec
- Infill : 10%
- Layer height : 0.4mm

Anisotropy

This piece was the smallest but the trickiest...
First, we didn't get the base layer to stick on the heated board with a 50°C plate temperature so we pushed it to 60°C and added a raft.

It sticked to the plate but was horrible...

As the print still wasn't right we lowed the speed from 70mm/sec to 50mm/sec.


As the print was worse and even broke, we checked again the parameters and discovered that the problem came from the travel as the retraction was on, which shouldn't in this case.
And so we finally got our piece correctly ! Yay !

Link to our Group page
Individual assignment
3D scan
The 3D scan part was a real adventure !
In the Fab Lab we have an Einscan Pro scanner running with the Shining 3D program.
Our computer being under repair, we had to get another one for this week.
The first problem was the software that wouldn't run on it. Solution = download an older version.
Then we tried to calibrate the scanner by following the program's videos.


After at least 15 attempts in several places (with and without light in the room) it finally succeeded !




But then, the first piece we tried to scan (this cute DIYed Minion plush) didn't went well because it was too cylindrical and had some black pieces...


The second piece was too complexe and so closing the object was hard.

We finally did the scan on a 3D printed owl and it was better.


we could work on all the steps to get the piece finished and have the seperated files.




Non substractive 3D design and print
For the non substractive object, I designed a "cat toy" ball : a "voronoid type" sphere with a plain ball inside.
I designed it in Fusion 360 by following this quick tutorial on Youtube
.
I first sketched and extrude 2 spheres.

Then I designed the "voronoid" aspect on the biggest one.
We printed it on the Ender-5 Plus and added a raft and some tree support.

The print is ok but not perfect and it was hard to take away the supports.

My journey

Files and resources
My files
Resources