# we build robot episode 69 Source: https://www.youtube.com/watch?v=wiF_IQOgF3o Recap page: https://rapidrecap.app/video/wiF_IQOgF3o Generated: 2025-07-11T02:38:43.526+00:00 --- ## Quick Overview The team races against a three-day deadline to build a 13-foot tall robot head for a cosplay competition in San Francisco, aiming for the $1000 grand prize. They acquire metal sheets and bars from a metal yard, assemble the main frame, and begin fabricating facial components like the mouth and eyes. Challenges arise with material flexibility and a modified mobility scooter lacking brakes, but the team pushes through, welding late into the night to prepare for mechanization. **Key Points:** - The team has three days to build a 13-foot tall robot head for a competition in San Francisco. - They acquired 104 pounds of metal, including thin bars for skin stiffening and a plate for the central hub, from a metal yard. - The robot head's frame was extended by 2 inches using 2-inch tubing, making it taller than initially planned. - A mobility scooter was modified with a 10,000-watt motor, but it currently lacks functional brakes, leading to an uncontrolled test drive. - Fabrication of the robot's facial components, including curved mouth corners and eyes, began using metal rollers and brakes. - Welding of the frame's internal and diagonal supports continued late into the night to meet the tight deadline. - Software development is underway to animate the robot's features and enable text-to-speech interaction for the competition. **Context:** A team of creators, including Will, Michael, and Kevin, are in a frantic race against time to construct a massive 13-foot tall robot head. This ambitious project is for a robot cosplay competition in San Francisco, where they aim to win a $1000 grand prize, or humorously, the $3000 last-place prize. The video documents their progress over a few intense days, highlighting the challenges of large-scale fabrication and the humorous dynamics of their collaborative effort. ## Detailed Analysis With only three days remaining until a robot cosplay competition in San Francisco, the team embarks on building a 13-foot tall robot head. The competition offers a $1000 grand prize, but also a $3000 last-place prize, adding a humorous incentive for failure. On day two, the team focuses on skinning the robot head's frame, which was partially completed the previous day. They visit a metal yard to acquire necessary materials, including thin metal bars for internal stiffening of the sheet metal skin and a plate for the central hub. They also pick up angle iron for additional structural support. Concurrently, one team member, Michael, works on modifying a mobility scooter by installing a powerful 10,000-watt motor and speed controller, intending to make it go very fast, despite the current lack of functional brakes. This leads to a chaotic test drive where the scooter speeds off uncontrollably. As night falls, the team continues welding the robot head's frame, adding internal supports and preparing for the face panels. They begin fabricating the mouth corners and eye components from sheet metal using a roller and metal brake. The video highlights the demanding nature of the build, emphasizing the constant surprises regarding component size and the challenges of working with materials. Despite the tight schedule and unexpected setbacks, the team remains committed, with one member developing software to animate the robot's features and allow text-to-speech interaction for the competition. ### Competition & Initial Goals - The team has three days to build a 13-foot robot head for a San Francisco cosplay competition with a $1000 grand prize and a $3000 last-place prize - The robot head will be driven to the competition near the Golden Gate Bridge on Sunday, July 13th, at 2 PM - Participants must build their own robot costumes, which will be judged by the team and their giant robot head. ### Material Acquisition & Frame Progress - The team visits a metal yard to purchase materials including thin metal bars for skin stiffening, a plate for the central hub, and angle iron for structural support - They acquire 104 pounds of metal, including 20-foot pieces of 1/8-inch cold-rolled steel - The robot head's main frame, started the previous day, is expanded with 2-inch tubing, making it taller. ### Mobility Scooter Modification - Michael modifies a mobility scooter by installing a 10,000-watt motor and speed controller - The scooter lacks traditional brakes, relying on motor reversal for stopping, which proves challenging during a low-throttle test - Kevin takes the scooter for an uncontrolled test drive down the driveway, highlighting the power and lack of immediate stopping capability. ### Sheet Metal Fabrication - The team begins fabricating the robot head's facial components, including mouth corners and eyes, from sheet metal - A metal roller is used to curve the mouth pieces, and a metal brake is used to create precise bends for other components - The process is described as challenging due to the size of the parts and the precision required. ### Late-Night Welding & Software Development - Welding continues into the night to complete the robot head's frame, including internal and diagonal supports - Michael works on software to animate the robot's components and enable text-to-speech functionality, allowing people to send text messages for the robot to read aloud. ### Project Outlook - The team acknowledges the immense amount of work left and the tight deadline, with the competition less than a week away - They emphasize the importance of completing the frame and mechanizing the robot's features for the upcoming event. ![Screenshot at 0:06: Michael working on mobility scooter](https://ss.rapidrecap.app/screens/wiF_IQOgF3o/00-00-06.png) ![Screenshot at 0:50: Will showing robot head frame](https://ss.rapidrecap.app/screens/wiF_IQOgF3o/00-00-50.png) ![Screenshot at 1:34: Will and Michael carrying metal bars](https://ss.rapidrecap.app/screens/wiF_IQOgF3o/00-01-34.png) ![Screenshot at 2:15: Metal being weighed at metal yard](https://ss.rapidrecap.app/screens/wiF_IQOgF3o/00-02-15.png) ![Screenshot at 3:08: Team strapping metal in truck bed](https://ss.rapidrecap.app/screens/wiF_IQOgF3o/00-03-08.png) ![Screenshot at 3:53: Will showing robot head frame progress](https://ss.rapidrecap.app/screens/wiF_IQOgF3o/00-03-53.png) ![Screenshot at 4:29: Michael showing 'william osman is a racist' on phone](https://ss.rapidrecap.app/screens/wiF_IQOgF3o/00-04-29.png) ![Screenshot at 6:08: Kevin welding mobility scooter](https://ss.rapidrecap.app/screens/wiF_IQOgF3o/00-06-08.png) ![Screenshot at 8:03: Kevin driving mobility scooter with remote](https://ss.rapidrecap.app/screens/wiF_IQOgF3o/00-08-03.png) ![Screenshot at 10:08: Will holding curved metal piece for mouth](https://ss.rapidrecap.app/screens/wiF_IQOgF3o/00-10-08.png)