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Frame from Saw Stop - This guy puts a finger into an active table saw blade & comes away without a scratch! Plays via YouTube's privacy-enhanced embed

Saw Stop - This guy puts a finger into an active table saw blade & comes away without a scratch!

Anthony Prezutti Comedy Mentalist
Demos
YouTube
2 HN users recommended this demo2 months2015–2018 score 2.5
Years with an HN recommendation, 2007–2026

Linked as the canonical demo of a safety technology that stops a blade before it injures a finger.

A short clip showing a person touching an active table saw blade with a finger and walking away unharmed, thanks to SawStop's system that stops the blade within milliseconds of skin contact.

“The demo also never gets old. Just too badass.” (HN, 2016)

1 strong recommendations · 1 recommendations · 1 citations · Demos

3 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@nickpsecurity Dec 2016 Strongly recommends
on HN thread The Resurgence of C Programming
Case in point: [this video] Maybe we need to use your sharp tools point with that video. It drives the point home with even experienced people losing fingers to their tools followed by tech modified to prevent it. The demo also never gets old. Just too badass.
Demo of tech preventing finger injuries that never gets old
@toothbrush May 2015 Recommends
on HN thread The View from the Front Seat of the Google Self-Driving Car
Wow, that's super neat, i'd never heard of it. Seems like something that should be absolutely mandatory for all factories equipped with such devices! Go technology! Here's a demonstration, it's very fluffy but it gets the point across. [this video]
Demonstration of SawStop stopping a blade on contact with a finger

Citations, criticism and jokes

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.

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