We are a STEM Racing team from ISL Luxembourg, competing at the national level in the Tier 3 Finals, on the 23rd of May at 8:00 AM.
The Ultimaker S5 is one of the best printers available in today's market. Engineers, architects, and designers use this printer because of its impressive and diverse 3D printing ability. This printer allows for our STEM racing team to have limitless printing possibilities. We can easily manufacture custom parts and print aerodynamic lightweight cars in one go. In past years many STEM racing teams have struggled with printing due to a lack of understand of their printer. However our team, particularly our car manufactures, have studied this particular model, and are able to print out up too a car per day! Allowing for greater testing and development of our finale car design, creating a car that's ready to win.
Printer Specifications:
The exact build of the Ultimaker S5 is 330 x 240 x 300 mm, making it possible to manufacture big components or lots of small components in a single run. The printer is capable of printing two materials at once, allowing dual-extrusion. The printer can support over 280 filiments allowing for any style, weight, or volume to be used in our STEM racing car. Finally, a color touchscreen at the botum of the printer makes it easy to set up and operate. Guided menus and print previews are provided in the machine. Bed leveling, filament flow sensors ensure successful starting and completion of prints.
Autodesk Fusion 360 is an online program which combines engineering design and manufacturing. Its mainly functions as the building blocks to create any digital 3D model, using specific. The software has specific parameters, which help users control the size and structure of models like their thickness using parameters. For instance, the parameters can be categorized into two types: user parameters and model parameters. The former refers to parameters specified by the designer and helps users control multiple sizes and make formulaic computations, while the latter are automatically created when building models and help specify certain geometrical sizes. Fusion is used by real life architects and designers to create buildings and products. It's the perfect tool to use for STEM racing, as users change can easily modify the specific parts of the car to achieve the most aerodynamic airflow. Moreover, the program uses various units (millimeters, inches, angles), and allows parametric expression computation.
The 3D printing filament we use is ABS (Acrylonitrile Butadiene Styrene). ABS is a commonly used thermoplastic engineering filament, suitable for 3D printing. Compared with filaments such as PLA, its main advantage comes from the synergistic effect of its three monomers, which produces significant advantages. First of all, ABS unites strength and tenacity. Acrylonitrile has rigidity, hardness and chemical resistance, and is suitable for load-bearing parts. The impact resistance of butadiene prevents printed parts from easily breaking. Styrene improves the fluidity of the material, which is conducive to the molding of complex structures and improves the surface finish.
The second advantage is that it is compatible with mainstream 3D printers and is widely used in industrial manufacturing, prototyping and other fields, showing great practicality.
However, ABS presents significant disadvantages. During the printing process it has a relatively high temperature, which highlights the certain requirements for the performance of the printer. As well as, it is prone to shrinkage and warping during the molding process, this means it requires a stable printing environment. Additionally, ABS can emit a slight odour during printing, emphasising the need for adequate ventilation.