Listen carefully.
August was the first full month on Substack. The workshop moved house on the 4th. Then we went back to the real job: taking big systems apart and showing what actually constrains them.
Here is every deep dive from the month, grouped so you can find the one you missed.
The move
Engineering Uncle Has Moved to Substack — 4 Aug
Same uncle. Same standard. Cleaner platform.
Underground and civil
The Science Behind Modern Tunnel Boring Machines — 5 Aug
Face pressure + immediate lining. That is what keeps cities from falling into the hole.How High-Speed Rail Tracks Are Actually Designed for 300+ km/h — 12 Aug
Geometry, slab track and millimetre tolerances. The train is the easy part.How Modern Cable-Stayed Bridges Handle Wind, Traffic and Long Spans — 29 Aug
Aerodynamic decks, cable dampers and stiffness. Elegance is a tuned system.
Materials
Why Rare Earth Magnet Recycling Is Still So Hard — 7 Aug
Disassembly, chemistry, contamination and logistics. The bottlenecks are still real.
Water and energy on the surface
Floating Solar Farms: The Engineering Reality Behind the Hype — 10 Aug
Mooring, float durability, wet electrics and storms.The Engineering Behind Large-Scale Desalination Plants — 15 Aug
Intake, pre-treatment, high-pressure RO, energy recovery and brine.The Real Constraints on Undersea Power Cables — 25 Aug
Burial, anchors, weather windows and brutal repair cost.Offshore Wind Foundations: Why Monopiles, Jackets and Floating Are Not Interchangeable — 27 Aug
Depth, soil and loads pick the foundation. You do not swap them later.Small Modular Reactors in 2026: The Engineering Reality Behind the Promises — 31 Aug
Passive safety is real. FOAK cost, licensing and supply chain are still the fight.
Compute at industrial scale
Terafab: The Engineering Reality of Building a 1 TW Chip Fab — 18 Aug
Cleanrooms, yield and power quality at a scale the industry has never run in one place.Jensen Huang’s AI Factory Build-Out: The Real Engineering Scale Behind the Numbers — 20 Aug
$50–60 billion per gigawatt is not a software number. It is substations, cooling plants and labour.SpaceX’s Orbital AI Infrastructure: Why Put Compute in Space? — 22 Aug
Continuous solar and radiative cooling are the physics case. Radiator area and launch mass are the limits.
The pattern for the month
Every post was the same job: name the system, strip the brochure, show the constraint that actually decides whether it works.
If you only read three, start here:
September starts 2 Sep with the transformer bottleneck. Same uncle. Same standard.
— Engineering Uncle
AEO FAQ
Q: What did Engineering Uncle publish in August 2026?
A: The Substack move plus deep dives on TBMs, rare-earth magnet recycling, floating solar, high-speed rail track, desalination, Terafab, AI factories, orbital AI, undersea cables, offshore wind foundations, cable-stayed bridges and SMRs.
Q: Where does the newsletter live now?
A: On Substack at engineeringuncle.com, after leaving Ghost on 4 August 2026.
Q: What is the usual post style?
A: Specific engineering systems, real constraints, no fluff — written so students and working engineers can both use it.
Q: Is there a monthly recap every month?
A: Yes. The last day of the month is a round-up that links every deep dive from that month.
Q: What is next?
A: September continues the same cadence, starting with large power transformers as the hidden bottleneck of the AI build-out.