In the 137th episode of "Taps and Patients," host AJ chats with Derek from Fidget Things and Harrison from Precision Ingenuity, discussing the growth and evolution of their businesses since Derek was last on the show two years ago. They delve into the challenges and advancements in their machining operations, particularly talking about new equipment, production processes, and the impact of social media on marketing and sales. The conversation also covers various manufacturing techniques, tools, and personal anecdotes about their respective journeys in the industry, as well as brief mentions of upcoming collaborations and product ideas.