Tech article
Initial DIY Cleanroom Experimentation
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Hacker News | Sep 24, 2026 | luu
Automated excerpt
Most cheap test tools are designed for very large pressure to be just barely good enough with its 5 Pa rated accuracy. There were some small gaps in the taping, but it got to 83 Pa. I'm not sure how seriously to take this: the meter is only rated to 5 Pa.
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