Material Purchase: Amazon - motor, breadboard; offline - wood rod
3D printing: 6 new, modified winch systems
this time, instead of 3D printing in school, I used Ziye’s home 3D printer to print the other 5 sets of winch systems for better quality. Since Makerspace only offers PLA material, it is not rigid enough so I have to fill it with >80% infill to let the winch rock solid, which takes me more than 8 hours to print one set of fragments. However, the 3D printer in Ziye’s house uses PETG, a more reliable kind of plastic, which only needs 15% infill to achieve the same strength (compared to 80% infill PLA), and only needs 2 hours to complete one set. The upgrade of the production method brings 400% productivity. Also, the new 3D printer avoids problems like overheating surfaces, preventing the edges of the models from warping up.
Also, for the winch per se, I figured there was too much fraction on the connection of the winch and the support, so I adjusted the diameter of the connection to reduce the fraction.
Tangible Fabrication: Produce Fragments. This week, I fabricated 2 sets of new fragments, one big and one small, I will also have medium-sized fragments, the specs are shown below. After calculation, I still need around 12 wood rods to produce 3 big, 3 mid, and 3 small-sized fragments. I foresaw I could complete all fragments in the following week or two.
