This is probably because it requires a lot of tolerance on the end of the 3D printers. Unfortunately, the threads didn’t work out as well as I had hoped, even on the newer, fancier one (P2). Notice that the print from P1 had very imperfect circles, and the strokes of filament were significantly more evident than the print from P2. Here’s what it looked like:ģD prints from P1 (left) and P2 (right). On Friday, I CAD’d the bottom of the mold in SolidWorks. I also had a hard time trying to figure out how to edit the dimensions and components, so I decided to do the second iteration of the design in SolidWorks. Unfortunately, I found that in Fusion 360, it was very difficult to keep track of dimensions across the different parts in the assembly, and I ended up just getting confused. One idea that I had was to add threads and screw the parts together so that the silicone it was easier to take out of the mold. We wanted to improve upon these issues in the next iteration. Unfortunately, there was a large air bubble, it was difficult to take off, and we also wanted it to be sealed on one side. So, I designed the mold, passed it off to another team member, Eric Wu, and he cast it! This is what it looked like: Silicone tube cast with braided plastic lining, made with Version 1 of the mold. Since I used Autodesk Inventor a little in high school, I was familiar with some of the features of Fusion 360, such as drawing and extruding. Here’s some pictures of the CAD from the first iteration of the mold: Two of three pieces of the silicone mold, designed using Fusion 360. I designed the first version of the mold with Fusion 360 because my friends were doing a tutorial on it in the Nolop FAST Facility in the SEC. I’ve used this project to explore a variety of CAD software, including Autodesk Fusion 360 and SolidWorks. Another team member, Isobel Bohmer, had the idea to cast the plastic tube into silicone so that it would be easier to keep it airtight.
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