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Day 2: My partner, Elle, and I had to make our designs for the class. Requirments:
Create two mating pieces that form a rectangular block that is flat on all sides when assembled.
Each assembled block needs to be 1.5”x3”x2” when assembled.
Each mating piece needs to have at least two extruded shapes (one circle and square) that are 1” high along with the corresponding cutouts for your partner's block.
Each person must use their own Fusion360 file and 3D print it when you are confident your design will fit together correctly.
You have to complete this task without creating a 2D drawing or sharing files.
Document your efforts in your digital portfolio.
Proccess
We first talked through how we wanted to assemble our design, then side by side, worked on creating it in Fusion. We needed to create a design where with 4 extrusions: Two 1" rectangles could fit into 2 rectangle-shaped holes that were also 1", and repeat that for two circle holes. We made each hole a little bigger than the outer extrusion for a better fit. We also separated each of our blocks so they could fit together into the correct dimensions.
Day 2: I created a clearance test and learned about tolerances: I made 5 square holes ranging from 19.8 mm to 20.2 mm to help understand the different types of fits for a 20mm cube. I did this to understand the different types of clearance fits, like interference (very tight fit), clearance (allows some movement), and finally adjacent(allows a lot of movement), as seen when the cube fits into the 5 different holes.
Day 3: I made a Google Sheet to track all the dimensions of the cube. Most of my dimensions were off due to very small extrusion errors whilst printing the 20 mm cube.
Day 4: Today we learned about creating different types of components that are different put still fit into the specifications of 19.8-20.2mm by creating different cubes that fit these specs. This way, when I design parts for projects, I can accurately create fits of different shapes to help.
Reflections: On this Section, I learned how important communication and planning are when designing mating parts with a partner. By testing tolerances and clearance fits, I learned more of how even small measurement changes can affect if parts assemble smoothly. I also realized how important it is to account for variables, like extrusion errors from 3D printing, when designing in Fusion360. Documenting has helped me reflect on mistakes and see how each step built up. This experience showed me the importance of being accurate and testing in creating functional designs.
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