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Un-cuttable locks?

Old 07-21-20, 08:13 AM
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Un-cuttable locks?

Perhaps there's hope? "Even drill bits from power drills or water jet cutters fail when they meet the tiny spheres inside the material."

https://www.redferret.net/?p=60640
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Old 07-21-20, 08:32 AM
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Then it gets stripped , while locked ...
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Old 07-22-20, 02:37 PM
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Stinging nettles juice for your bike lock ;-)
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Old 07-22-20, 04:01 PM
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If they make it light and affordable, I'm in!
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Old 07-22-20, 04:11 PM
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I don't get it. It looks like the grinder cut it like it would cut steel. It wore down the cutting wheel quickly but the material was cut in good time. It looks like they cut 2 inches of 1/8 inch uncuttable material in 30 seconds.

(video from linked page)


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Old 07-22-20, 04:12 PM
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The whole chain would need to be made of this.
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Old 07-22-20, 05:30 PM
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The promise here as I understand it would be a very bulky lock, massing similar to a good steel one but providing a shackle thick enough to choke a bolt cutter and the material itself would insure against power tools. That sound about right?
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Old 07-22-20, 06:24 PM
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Originally Posted by tyrion View Post
I don't get it. It looks like the grinder cut it like it would cut steel. It wore down the cutting wheel quickly but the material was cut in good time. It looks like they cut 2 inches of 1/8 inch uncuttable material in 30 seconds.

(video from linked page)

https://www.youtube.com/watch?v=S8no...ature=emb_logo

The plunge cut looked like it was cutting through mild steel.

The person only had difficulties when trying to move the saw forward through thin steel (1/8"?).

I'd have to see an example with a U-Lock shackle to judge. Or, perhaps looking at chain links.

Star shape of shackle embedded in rubber?

One would also have to make sure that the material isn't brittle to a hammer attack.
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Old 07-22-20, 06:52 PM
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Originally Posted by CliffordK View Post
The plunge cut looked like it was cutting through mild steel.
I'm pretty sure the plunge cut was cutting through mild steel. It's definitely not MMC, not with those tack welds. The stuff that eats the blade is cast within.
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Old 07-22-20, 07:03 PM
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Originally Posted by Darth Lefty View Post
I'm pretty sure the plunge cut was cutting through mild steel. It's definitely not MMC, not with those tack welds. The stuff that eats the blade is cast within.
Ahh, thanks.
So if you could peel off the outer layer, then the stuff within should have zero residual strength.

Could one silently defeat a U-Lock made with that stuff with a pipe cuter?
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Old 07-22-20, 07:11 PM
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Originally Posted by CliffordK View Post
Ahh, thanks.
So if you could peel off the outer layer, then the stuff within should have zero residual strength
No. Composite materials do not work like that. It depends on how well the ceramic bonds to the aluminum.
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