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[russ57]

Not me, just popped up in my feed.
https://youtube.com/shorts/Uh7SAsD53G0?feature=share

[BobL]

Good reminder but if you read the comments you will see a lot of them suggest its been staged and I agree.
For a start the piece of disc remaining in the grinder is a different diameter and shape to the piece that has penetrated the shield.
That shield is so rubbish and would have flexed so much on impact, the inside of the shield would have struck his face and then the disc would have penetrated and given him something to really think about.

If its not staged, zero points for using about the crappiest shield you can buy, it's probably not even polycarbonate.
It's also not a 3D curved surface which means it can easily flatten on impact making it easier for something to flex and penetrate it.
A decent 3D polycarbonate shield would have easily resisted that piece of disc.
Thicker discs are something else.

[Grahame Collins]

Hi guys,

No doubt it was staged!

Elements of bovine excreta are present in that video presentation. As was noted the embedded disc was about 180 mm."so its bigger and much thicker and heavier than the disc fragment that might be thrown from a 4" angle grinder.

I would also point out that the 180mm AG has much more power that the 100mm AG therefore I think the 180 mm could embed itself in a shield.

The video was a bit sad as it appears to defeat its own well intentioned message.

I have the same shield and can tell you it can stop a broken 100mm x 1.6mm CUTTING disc fragment from an angle grinder.

I was cutting a frozen bolt underneath a ute to remove a damaged bull bar.

The shield was in place on my head and I happened to slip and the grinder and its wheel got out of alignment with the original kerf and it shattered.

The half wheel diameter sized fragment struck the shield directly in front of my right eye.I believe it may have been the toughness of the shield and the flexibility of it that saved the day.

People might expect that I would tell them that there was a mighty blow on the shied,but it was not the case. Yes the shield moved slightly and that was it.

The dead giveaway of something being wrong is the angle grinder vibration.

I have broken a couple of these light cutting discs and can tell you there no appreciable impact to the body.

I would not like to say the same about a thicker Grinding Disc flung by a 180mm grinder.

However I think it forces us to consider what we risk each time we use an angle grinder.

Grahame