Your name - Fab Academy

This week's brief: Group assignment:

test the design rules for your 3D printer

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 i

GROUP ASSIGNMENT
You can view our group assignment here!

The values obtained after testing the design rules of the 3D printer are:

Bridge test - 20 mm
Diameter test -

Overhang test - 45 deg
Clearance test - 0.3 mm

INDIVIDUAL ASSIGNMENT

Additive Manufacturing Processes

Additive manufacturing, also known as 3D printing, is a process that creates three-dimensional objects by adding layers of material, typically from a digital model, rather than subtracting material like in traditional manufacturing.
The additive approach allows for greater design freedom than conventional methods. With 3D printing it is possible to obtain objects with complex geometries, impossible to obtain with subtractive technologies. This advantage opens up new opportunities for custom product design.

Bambu Lab A1

We use the bambu lab A1 printer for this week's assignment. The Bambu Lab A1 is a high-speed Core XY 3D printer , offering smart automation features like auto Z-offset, auto flow calibration, auto belt tensioning, and real-time flow rate compensation. Bambu labs have their own slicer software called Bambu Studio, where you can view the details of the print job.

Design

I wanted to make an animal. with articulate joints.Articulated 3D print models are great for model kits, figures, puppets, miniatures, robots, concept prototypes, and any application where flexibility, posing, and motion are desired. These dynamic and useful models have moving pieces that can flex, spin, and bend. Action figures, mechanical components with axles, and even toys can all benefit from the added interactivity that articulated 3D models offer, which static printing just cannot match. Initially i started to make a snake but since i was new to Fusion360 it was a little hard to manipulate some curves. SO scrapped that and decided to make a manta sting ray.

3DModel

To make the 3d model first we have to create a sketch. You can either import a svg of the design or make the the design in fusion. i made the the squid by making half of the the wing and the body and then mirroring it so that i will get both side symmetric.

I added a tail too.

After finishing the sketch i extruded the parts required. we have to make the joints now. to do so i made another sketch in the right plane and made circles so that it can be extruded into the cylinder part required for the joints.

the cyclindrical parts are joined to the body using the modify tool and setting the option as join.

i added a small fillet to the outer edges to give it a smoother feel. I also added a ring to the top of the head so that it can be used as a keychain.

Printing

After finishing up the design we have to export the file into .3mf format so that we can bring it into Bambu studio slicer.

Open bambu studio and openn the exported file.

We can view the how the printing process will occur by dragging the scrollbar on the side up or down .While doing so i realised there was a mistake in one of the joints. I went back to fusion to fix the mistake and exported it again. It worked out fine this time.

We can also choose the colour of the filament required to print. I set the body to be white and the eyes to be black. T he project was sent to print

After the print was done i found out that the tolerences i gave were too tight and the joints were barely moving . While checking the joints one of the wings broke. So i had to go back again and adjusts the tolernce values and print it again

This time around it worked perfectly! This was how mini manta sting ray keychain looked like at the end.

3D scanning

Artec 3D scanner

3D scanners capture the geometry of an object and produce a three-dimensional digital model. Artec's 3D scanners are structured light scanners.They operate by projecting light in a pattern, usually in the form of multiple parallel beams, onto an object. By projecting a grid pattern on the object, the scanners are able to capture the deformation or distortion from multiple angles and then calculate the distance to specific points on the object using triangulation. The three-dimensional coordinates obtained are used to digitally reconstruction the real-world object.

Artec Studio is a software program for 3D scanning and post-processing. Data is captured and split into several "scans," which are then processed and fused into a 3D model.

Artec Studio includes a fully automatic post-processing mode called "Autopilot," which prompts users through questions related to the characteristics of the object being scanned and provides the option to be guided through the post-processing pipeline.The Autopilot mode will automatically align scans in a global coordinate system, determine which algorithms to use for post-processing, clean captured data and remove base surfaces. Upon completion, scan data can be directly exported to 3D Systems for further CAD processing.

You can see these processes being done using Autopilot in the below images