Ring Testing Grinding Wheels

The full story at the link above has more details on this procedure.

[HypocriticalPotato]

Heard about this in my safety class and was curious, awesome demo- a great thing to add to my knowledge toolset!

[YoeyYutch]

Great demo. Thank you!
Glad to see that you're all in one piece after your mishap.

[curtiz]

I am 67 years old, and wish I had viewed this earlier. Two days ago I put a grinding wheel on my grinder, used one, I was grinding the nubs off a drill bit shank to get it to fit in the drill index again. When I started the grinder there were no odd sounds or vibrations. As soon as I touched that bit to the stone it exploded, and I mean exploded! One piece hit me in the chest and than flew and hit my jaw. A few bruises and small lacerations, but no ER visit. I was lucky, it could have been much worse. Thanks for getting the ring test info out there!

[kevinbh]

OSHA inspector for 9 years here. PERFECT video and demonstration!

[Bettinasisrg]

This is by far the best ring test video out there! Having both with & w/o crack sounds immediately next to each other, and some other videos didn't seem to be hitting the cracked one the same, almost like they're trying to exaggerate the thud sound, which just makes it harder (for us) to determine the difference between the two sounds. Sorry for the rant:-) I have a question too, my two wheels both ring, but the tones (or pitches?) are different, like 2 bells. Is that normal, I would think so, but just wondering your thoughts. I have an old Chicago 7320, works great!

[SoundMoneyMetals]

Would you be ok if I shared this on my social media? I’d give your YouTube channel credit

[pshah]

Thank you.
I tried to understand from other videos, but this is really more clear to understand. Good is
1)Big size of grinding wheel (instead of hand grinder) 2) Explanation by the good wheel and bad grinding wheel showing the sound difference.
Thank you once again.

[alechiggins]

Thanks for the video. Great advice. One of these wheels exploded on a guy in our shop. Luckily he was wearing an ANSI rate face shield plus safety glasses underneath. Some of the shards from the wheel went right through the face shield and actually got lodged in his safety glasses. Without both layers of protection he probably would be blind. Even so, he was lucky that he wasnt seriously injuried.

What do you value more: a few moments of your time or your eyes, fingers, or even life? Complacency costs lives. Always check your equipment before using.

[Chris]

Very good info! I read this in my manual but didn't quite understand it. Thanks for making this simple for me. Also will this work on an angle grinder grinding wheel?

[starseeddeluxe]

It would be helpful to know more details about your grinding wheel. Was it an 8" grinding wheel? Because an 8" grinding wheel is not supposed to run at 3, 450 rpms. If you do calculations, the speed on an 8" grinding wheel is exponentially higher. It's unfortunate that most grinders run at a default speed of 3, 450 rpms. The 1, 750 rpm motors need more windings to run smoothly, and cost more to manufacture, so they aren't as common.

[brandanlyons]

Be bright, Be Brilliant, Be Done. Nice work!!!!

[dlk]

Cool.Thanks for the tip.I had never heard of this before.I had also heard not to grind aluminum on a bench grinder.It seems the aluminum can over heat and explode the wheel. I don't know, just something I heard once.

[atramentis]

Much appreciated, just got a wheel grinder, and intend to do this before I touch any metal to it.

[SteveRobReviews]

now that tip is fantastic, thanks. Off to the garage to test out mine. !!

[steveb]

It says in the instructions with my abrasive cut off blade not to use it if it has been dropped. Dropped how far and how hard? Doesn't make sense. Can you test the blade to se if it is with this test?

[joshuatoa]

Studying safety standards, my material referenced a "right test". Your video did a great job explaining this new concept. However, referencing other material i did notice you should not use gloves while using grinders. Since the purpose f the video is to be treated as a "safety related", i think it would be imperative to example high safety standards in every manner possible. Just tryin to look out~

[dav]

Very good video,
Your a lucky guy if there was no serious injury when that wheel exploded. I was working with a guy a few years back and that happened to him when running a grinder, he all but lost his lower jaw bone he still in not fully recovered and prolly will never be. Safety first when around spinning grinding wheels.

[MegaSesek]

well done!  I will share this with my safety class!  Thank you!

[NewMetalworker]

Angle grinder wheels are a very different composition and have a different center. I doubt the ring test would work on them

[heribertogonzalez]

Muy buen consejo ya que yo ocupo unas que miden 660x19x203 gracias...