5. 3D Scanning and printing¶

Group assignment:¶

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

To see our group assignment click here

Individual assignment:¶

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

3D PRINT¶

For the realization of the missions of this week we used the Original Prusa i3 MK3S+ 3D printer available in our Fab Lab

3D DISIGN ¶

Hello everyone 👋👋 for today i decided to do my 3D modeling with Fusion 360 software. Follow me as I explain everything.🤩🤩🤩

To begin, open fusion 360. As a reminder, we’re going to make a kind of anti-stress toy.

After opening the software, select the sphere too.

Next, we’ll need to choose a plan on which to draw our sphere.

We’re now going to make a cut on our sphere. To do this, we need to make a rectangle on our sphere and then extrude it. This will allow us to cut our sphere more easily.

Now that that’s done, let’s make another sphere inside the previous one. To begin, we choose the assemble function, then build the second sphere as shown in the images.

We’re now going to make a handle for our module. Again, we choose the assemble function, then select a new sketch and then choose the circle option, dissolve a circle and extrude it. Follow the images below.

Next, we’ll create a sphere on the handle to make it more aesthetically pleasing. 🤩🤩🤩

We’re done with 3D modeling 👌👊👏

PRINTING THE MODEL¶

We need to open the file with PrusaSlicer software. Then follow the steps below to change the parameters.

We need to change the parameters to match those of our machine.

I’d like to remind you that I changed the scale because I found that my old dimensions were too large.

Generating of G-code ¶

We now need to generate the G-code for printing It’s as simple as following these images.

We can print now.

Turn on the 3D printer, insert the SD card and turn the white knob to select the file to be printed as shown below and click once on the knob to start printing.

RESULTAT ¶

We’re done this part 🥳🥳🥳🥳👊🏾👊🏾👊🏾👊🏾👏🏾👏🏾👏🏾👏🏾👏🏾

Too bad for me I had a bad result my work did not hold it broke 😥😭😭😖😞😓. But I realized that I used a PLA which is not very solid.

So I decided to use another type of PLA and I hope that this time everything will go as I wish. I cross my doights 🤞🏾🤞🏾🤞🏾🤞🏾

For my new attempt, I’ve changed the model a little for greater stability.

3D SCANNING¶

For the three-dimensional scanning process (3D scanning), we chose to use the KIRI Engine application because of its advanced modeling features and compatibility with a wide range of scanning devices, including iOS devices such as the iPhone and iPad, as well as Android devices. After trying for several days without success to scan with the Kiri engine, we decided to do things differently.

We decided to use the HP Einscan Pro

🔍 Einscan Pro HP: A versatile and accurate 3D scanner The Einscan Pro HP is a portable 3D scanner from the Einscan Pro range, developed by Shining 3D. It offers accuracy of up to 40µm and scanning speeds of up to 1,500,000 points/sec. This versatile scanner can be used in portable or fixed mode. It requires no optical markers for alignment.

It’s easy to use:

Start by calibrating with the scanner and the calibration range

To calibrate the device, first open the Exscan Pro software and create your account.

Take your scanner, place it at some distance from the plate and read the progress on the software. Point the center of the scanner at the centered square of the plate. as in the following video