Group Assignment

This week, we learned about 3D scanning and printing technology, and how it is revolutionizing the manufacturing industry.

Firstly, we discussed 3D printing, which is the process of creating physical objects from digital models. 3D printers work by laying down successive layers of material until the object is fully formed. This allows for complex geometries and intricate designs to be created with ease.

Setup the different characteristics:

Clearance

In clearance test, the 0.1mm clearance didn't move at all, 0.2mm is moving but tight so it would be a good clearance if you want just to make it move without a lot of free space, and all of the above are moving freely and nice.

Dimensions

Cube dimension Outer 20x20x20mm Inner 10x10x20mm Shrinkage in 3D printing is the reduction in size of the final model due to temperature changes from the melted thermoplastic, to the cooled extruded material layers.In some 3D printing materials such as PLA this shrinkage is very low (between 0.3 % and 0.5 %)

Bridging

bridging up to 20mm is totally fine.

Surface

This was a practice to see how layer height affects the part, the left part was printed with 0.3mm layer height and the right smooth nice one is 0.1mm layer height.

Overhang

It gave acceptable result at 4mm overhang distance.

Angle

In angle test all angels were fine, only the 0 angle one showed a little mess, I would go for the 40 degree angle to be in the safe side as I think with longer distances angles under 40 degrees will make a rough outer surface.

Wall thickness

Filament Materials

We also talked about the different materials that can be used in 3D printing, such as PLA - ABS - PETG - PC materials. Each material has its own unique properties and uses, making 3D printing a versatile and exciting technology.

3D Scanning

Scan an object using a RevoPoint POP2.

Next, we covered 3D scanning, which is the process of creating a digital model of a real-world object. This is done using a 3D scanner, which captures the object's shape and texture, and converts it into a digital file. This digital file can then be edited or manipulated using 3D modeling software, before being sent to a 3D printer for physical production.

Finally, we explored some of the applications of 3D scanning and printing, such as rapid prototyping, customized products, and even medical implants. The ability to quickly and easily produce physical objects from digital files has the potential to transform many industries, and we are just scratching the surface of what is possible with this technology.

Overall, 3D scanning and printing are exciting technologies that are changing the way we think about manufacturing and design. As the technology continues to improve and become more accessible, we can expect to see even more innovative and groundbreaking applications in the future.

Individual Assignment

Design for 3D printing

The print-in-place joystick is a great example of a design that is difficult to make subtractively. The joystick is designed to print all at once, with all of its moving parts built into the print. This requires precise design and a good understanding of how 3D printing works. The pictures show the different stages of the design and the final product, which is a functional joystick that can move in all directions.

Generative Design For 3D printing

Generative design is a powerful tool that uses algorithms and artificial intelligence to generate and optimize designs. It can be used to create complex shapes and structures that would be difficult to create manually. The process involves setting design rules and parameters, and then letting the software generate and evaluate multiple designs based on those rules. This can lead to highly efficient and innovative designs that are tailored to specific needs and constraints.

3D Scanning

Next, we covered 3D scanning, which is the process of creating a digital model of a real-world object. This is done using a 3D scanner, which captures the object's shape and texture, and converts it into a digital file. This digital file can then be edited or manipulated using 3D modeling software, before being sent to a 3D printer for physical production.

• One important step in using a scanner is to put the object being scanned at the correct distance from the scanner. This helps ensure that the scanner can capture the object accurately and in a way that preserves its details. It is also essential to make sure the object is positioned correctly, as even a slight angle can distort the scan. In order to determine the optimal distance, it may be necessary to consult the scanner's manual or conduct some experimentation with various distances.

• open the scanned file at Meshmixer or 3D builder to edit on the object

  

  

  

  • Now the file is ready to be printed