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3D Scanning and printing

Group assignment

2023

You can find all group-assignment in our group page

This week we worked on learning printing parameters.

We use Makerbot Replicator 2

We printed same sphere but with different mashing parameters and printing parameters.

Then we measured weight of prints, and compared with program numbers.

With buildplate, without and buildplate apart.

Then we made cardboard plate to make stand for prints.

And finally we have this.

2025

This week we tested different 3D Printers that are available at FabLab Armenia, with help of our instructor Areg.

Group assignment Link

I was testing Elegoo Neptune 4 max.

It is nice printer with big build volume (420420480mm) and awesome printing speed.

I used Orca Slicer to generate g-codes for testing.

I found my printer in program

I will use built-in tests.

Temperature test

First test is temperature test

We are trying to different materials for every test , PLA and PETG

i started with PLA , i am testing printing temperature from 190 to 230 degree.

After generating object with my parameters program doesn’t generated the up plane, so i needed to repair it.

Program found error and repaired it

Here is my model i want to print

So i sliced it

and exported G-code

As we have 2 same printers at FabLab, i made same test g-code for PETG, and printed it on second one.

I am testing PETG from 230 to 250 degree.

So i started printing (lime is PLA, white is PETG)

and got results

VFS test

I did same VFS test for PLA and PETG

And started print

Max Volumetric Speed test

Same steps for next test

Tolerance Test

Results

With help of Areg, I made table for Elegoo Neptune 4 max optimal parameters parameters

Test PLA PETG
Temp. Test 190-215°C 250°C
Volumetric Flow Test 15mm^3/s 10mm^3/s
VFA 90-450mm/s 165-300mm/s
Tolerance 0.05 mm 0.05mm

Designing Model

I started from creating cube, using “Createan additive primitive” tool

Then I set parameters of my cube, and position. (when setting position, very important to attach your body to “something”. I attached to X axis)

Then I cuted Sphere with 33mm radius from my cube, using “Substractive Sphere” tool

Let’s use some math and geometry to count radius of circles cube sides, to see what size i must set my inner cube

Off course, instead of that you can use your computer, but i don’t trust computers)))))

After making sure my computer is not lying, lets design inner cube

However, i will count it my myself))

I decided to take radius of cube 25, which i s more than 21.54mm as i need, so diameter will be 50.

Now, I counted what size must be my cube sides

Now i will make Sphere and Boolean-Cut it from my inner cube

Printing

2023

I am using Sindoh 3DWOX DP200 printer

In summary, the 3Dwox and Replicator 2 are high-quality 3D printers with advanced features and better build quality compared to the more affordable Ender 3. While all three printers are capable of producing high-quality prints, the 3Dwox and Replicator 2 are better suited for experienced users who need advanced features and higher print quality, while the Ender 3 is a good choice for beginners or those on a budget

Unfortunately, printer broke one of my outter cube side, and i stop printing.

I’m gonna print it with 100% density

2025

As i have new Bambulab Carbon X1 Combo I decided to print previous designed model on it

Firstly i downloaded stl model from my website, and imported it in Bambu Studio

Sliced it

and printed

After removing supports

I finally got my cube in cube (which is absolutely absolutely can not be easily made subtractively)

3D Scanning

I decided to scan the model of DaVinci’s catapult, we made in our laboratory with middle school children WITH POLYCAM program using my smartphone

As you can see sizes are not scanned correctly

here is link to watch video i’ve exported.

Then i scanned myself with Kinect usind Scanekt program.

And I imported it to FreeCad

Look mom, I am in FreeCad))))

Files

STL file

FreeCAD file

Conclusion

In summary, We learned about printing parameters and tested various settings on a Makerbot Replicator 2 to produce a sphere. I also designed a cube with a subtractive sphere and printed it on a Sindoh 3DWOX DP200. Although one of the outer cube sides broke during printing, I was able to print a replacement with 100% density. Additionally, I attempted 3D scanning with PolyCam and Scanekt programs, but encountered size accuracy issues. Overall, I gained valuable experience in 3D printing and scanning, and learned how to troubleshoot and find solutions to issues that arose during the process.


Last update: February 26, 2025