For this project, each student was tasked with designing a 20 mm x 20 mm x 20 mm cube in Fusion, along with a bracket featuring five square holes of similar size. The sizes of the holes ranged from 19.8 mm to 20.2 mm. This was to teach us about clearance when designing parts for the RC car project in the future. Before planning anything, though, we learned about the different types of fit and their usage. First is a clearance fit, where the shaft is not touching either end of the hole and can move around. The second one is an interference fit where the shaft is larger than the hole. This is used when something is meant to be secured in place indefinitely. The last one is a transition fit where the hole and shaft are the same size. An example of this is plastic assembely
After printing the design, I attempted to put the cube in several different holes. It easily fit in the slightly larger than cube holes, telling me they were clearance fits. It fit snugly in the 20 mm hole, showing me a transition fit, and it didn't fit in the other 2 easily, showing me an interference fit. A weird thing in all of the prints we made was that the side that was on the print plate had difficulty putting it into the holes. Under a zoomed-in camera, we saw the reason, which was due to us using the textured plate on the Bambu printer; the bottom was warped, causing it to be uneven. Seeing that one side was uneven, we decided to check the other sides as well and document our findings.
This project taught me a lot about how thier is room for error when