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Hello World!

Hello everyone and welcome to our blog! We are undergraduate course 2 students in MIT’s 2.008: Design and Manufacturing II. This semester we will be manufacturing 50 yo-yos (hopefully without breaking the bank). We will be learning about various manufacturing methods throughout this semester as we design our yo-yos and molds and then fabricate them using our new knowledge of thermoforming and injection molding. We are excited to get started and to share our ideas and process with you throughout this semester!

Here is our team picture:

From left to right: Lisa Gardner, Diann Huynh, Srimayi Tenali, and Albert Go.

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Getting in focus

This week, we made many changes to our design for manufacturing and design-related reasons. We finished machining 3 of the 4 molds for injection molding, created a plan for the design of our magnetic photo piece, printed on plastic and successfully thermoformed the camera lens, and tested injection molding for two of our pieces (including checking the snap fit on the pegs). Things seem to be in good shape! Check out our progress sheet here .  Machining At this point, machining hurdles are somewhat expected — but it seemed like we ran into many this week! The CAM for the camera front pieces (both top and bottom) proved difficult for two main reasons: (1) For the camera bottom piece, it was nearly impossible to generate a tool path that successfully removed enough material for the snap fit of our very small magnet. After trying horizontals, pencils, and several other finishing paths, we finally found the settings to sufficiently clean up the magnet hole (with a scallop,...
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Setting up our first (SNAP)SHOTS!

It's crunch time now! This week we made a lot of great progress and now have a more concrete plan for the rest of the semester. Here is our manufacturing schedule for the yolaroid! Yolaroid Manufacturing Schedule for this last week and the upcoming week Our biggest achievement this week is we made our first molds in lab! It took us a while to figure out how to use the mill but doing our first bit of machining together was a great learning experience. It didn't take us too long with the staff to start familiarizing ourselves with the mill and our first molds for the Yolaroid body came out really well! Maybe by the end of the semester we will be just as one with the machine as Joe! First Yolaroid molds! For lab this week, we are ready to begin injection molding the Yolaroid body as a team. Working as a team to walk through machining the molds as well as injection molding will allow us to split up some work for making the other molds and injection molding pie...
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Making Our Polaroid More "Attractive"

This week we have several new design and manufacturing updates. On the design side, we started to look more closely at the feedback we received at our last presentation and to finalize our plan for the solution that will allow us to take the photo(s) that we will make in and out of the polaroid. On the manufacturing side, we created our mold for the body part and the corresponding CAM. Design Updates At our last class, we were still trying to decide how we wanted to incorporate the polaroid picture piece that would come out of our yoyo. We initially thought of doing some kind of spring-loaded application (similar to an SD card reader), but this past week we settled on the idea of doing magnets. One of the magnets will be on the "photo" (which we decided to injection mold instead of thermoform) and the other one will be press fit into the front of the yoyo next to the "camera's lens" (shown below). We are still trying to figure out which kind of magnets we w...
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