Tech Ingredients: the videos Hacker News recommends
Not the channel's most viewed videos: the ones HN commenters kept linking with real commentary. The top pick, "Revolutionary Paint: How to Make Surfaces Stay Cool in the Sun", hN points to it as an impressive, hands-on DIY demonstration of passive radiative cooling that works in practice.
- 5 HN recommenders 5 months 2023–2026tutorialHN points to it as an impressive, hands-on DIY demonstration of passive radiative cooling that works in practice.
- 3 HN recommenders 3 months 2020–2025tutorialHN commenters point to it as a build guide for cheap DIY speakers that sound as good as expensive ones.
- 2 HN recommenders 2 months 2018–2023explainerIt comes up as a great explainer on magnetohydrodynamic drives and pumps in threads about silent submarine propulsion.
- 2 HN recommenders 2 months 2021–2023demoHN points to it as a detailed, DIY-able design for desiccant-based cooling.
- 2 HN recommenders 2 months 2022–2025explainerHN commenters recommend it as a practical explanation of microwave hazards and shielding, and of using microwave ovens safely without an enclosure.
- 2 HN recommenders 2 months 2018–2023tutorialPointed to by hobbyists interested in building flat-panel DIY speakers from cheap materials.
- 1 HN recommenders 1 months 2023–2025tutorialHN points to it in threads on radiative cooling as a hands-on explanation of passive daytime cooling.
- cited 3× 0 months 2021–2025tutorialCited as a DIY speaker reference when commenters discuss building their own audio gear.
Questions
Which Tech Ingredients video does Hacker News recommend most?
Revolutionary Paint: How to Make Surfaces Stay Cool in the Sun: recommended in 5 different months by 5 HN users between 2023 and 2026.
Is this every Tech Ingredients video?
No. Only videos that at least three different HN users linked, in at least three different months, with at least a sentence of their own commentary. That filter is what makes the list useful.
Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.