Uploaded February 2026 | Updated September 2026, 2 weeks ago

---

Sick of rackmounts scraping the rails? It’s all about the countersink.
Iain shows the quick fix for flush screws—and why the right angle matters more than you think.

Watch till the end for a smart Protocase Designer tip that makes it effortless.

#askanengineer #countersinks #screw #fasteners #metalfabrication #custommanufacturing #engineeringtips #productionfacility #protocase #engineeringshorts