Within Tolerance Within Tolerance Episode 258 - Just Send It with David Liu of Brittle Fluid
Jun 14, 2025
David Liu, founder of Brittle Fluid and former engineer at Neuralink, shares his journey from hobbyist to tech entrepreneur. He discusses innovative tools like Tool Trace and Rocket Brackets that streamline manufacturing workflows. David emphasizes the importance of relationships in the industry and advocates for a 'just send it' mentality, encouraging experimentation without fear. His insights on navigating challenges and supporting the machinist community through technology are both inspiring and impactful.
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Humble Beginnings in a Bar
- David Liu began machining with a Harbor Freight mini mill in a tiny office above a bar and grill.
- He was eventually kicked out due to clutter and safety concerns but this space launched his machining journey.
Learning by Doing and Failing
- Expect mistakes as part of learning machinist skills; hands-on experience is essential.
- Reading manuals is not enough; practicing and failing teaches durability and process.
Impulsive Mazak Purchase Story
- David purchased a Mazak Integrex 5-axis mill turn impulsively after researching at Emo.
- He valued direct sales and support relationships in buying high-end machinery.