I built a section of a aircraft landing gear undercarriage using carbon fibre. It was a team project during my first year of my PhD. Quite complicated to make. To give you an idea, it weighted less than 2 kg and it was able to resist about 1000 kg of load in the middle. It was difficult to make because we had to make it all by hand and it was very hard to make sure everything aligned and all the components were in the right location.
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