131–140 of 200 posts
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There are bike locks that do mostly defeat angle grinders. They are not cheap, of course. https://www.youtube.com/watch?v=SpVOTEOMRuE https://www.amazon.com/Kryptonite-Evolution-Integrated-Chain...
I don't know why you would link a video instead of saying the sentence "chain locks are hard to cut with an angle grinder because the chains are hard to hold steady"
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There are already so many ways to defeat locks, that locks are just there to keep honest people honest and to slow down criminals. The laser in the article took 30 seconds to cut a a tiny disc out of a sheet of steel 100 micrometers thick. That isn’t going to change things on the theft front. There are much more effective methods available today.
The battery powered angle grinder was the end of useful bike locks AFAIK.
Tl;dr if your lock doesn't double-lock (both sides) and have a cut-resistant core, it's only stopping people who can't afford a Ryobi angle grinder
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Not cheaply, which was part of the OP's post.
Yes, for relatively cheaply. I’m not talking about a 5-axis CNC mill, and I’m not saying it’ll be fast. But a laser cutter is not fast either, and even if lasers get more powerful… a really powerful one is unlikely to be “cheap”.
A society in which "the average car-buyer" has a tiny portable steel-melting laser is a society where I'm wearing welding goggles every time I leave the house. And I'm not sure how you even lock a bike or a door or a safe any more.
There are already so many ways to defeat locks, that locks are just there to keep honest people honest and to slow down criminals. The laser in the article took 30 seconds to cut a a tiny disc out of a sheet of steel 100 micrometers thick. That isn’t going to change things on the theft front. There are much more effective methods available today.
Yeah, I'm currently waiting on parts to replace my door handle. As far as I can tell, the would-be thieves snapped off the handle to make an opening, and used that to cut/snap the rear part of the lock (which normally can't turn because of the lock cylinder) and then substituted in a screwdriver to convince the car that the lock had turned.
Thankfully--and puzzlingly--they were unprepared for the steering-wheel lock and only managed to mangle and bend it (probably with a small bolt-cutter) before they gave up or were spooked off.
'Course, after that they would have still been unable to start the car for other reasons, but it still saved me the cost of fixing a torn-up ignition.
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There are already so many ways to defeat locks, that locks are just there to keep honest people honest and to slow down criminals. The laser in the article took 30 seconds to cut a a tiny disc out of a sheet of steel 100 micrometers thick. That isn’t going to change things on the theft front. There are much more effective methods available today.
The quality of locks has always been measured in time.
P.S.: Trying to think of the rare examples that don't qualify, and so far:
1. Direct violent response, e.g. booby-traps.
2. Denial by destroying whatever the attacker wanted, or delaying them enough that time renders it valueless.
3. Denial by making the effort unprofitable, even with no hard time limits.
The article rightly points out the industrial impact of more powerful and compact lasers but I cannot wait for those PCSELs to reach the small workshop market. Having a cheap laser able to cut metal at home / small shops would be so useful (And sneakily dangerous as lasers are).
Given how quickly dangerous these compact lasers can be, I think I'd rather stick with the handheld plasma cutter.
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Given how quickly dangerous these compact lasers can be, I think I'd rather stick with the handheld plasma cutter.
The quality of the cuts out of a plasma cutter are not great. I always have to spend some time cleaning them up after the fact. I'd hope laser cut parts are much better.
The article rightly points out the industrial impact of more powerful and compact lasers but I cannot wait for those PCSELs to reach the small workshop market. Having a cheap laser able to cut metal at home / small shops would be so useful (And sneakily dangerous as lasers are).
>> (And sneakily dangerous as lasers are) These seem safer. With a wide emission area and focusing lens, a reflected beam will weaken with distance.
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The quality of the cuts out of a plasma cutter are not great. I always have to spend some time cleaning them up after the fact. I'd hope laser cut parts are much better.
Given large scale laser cuts I've seen - they require less cleanup, but still some. You spatter molten metal everywhere.
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Honestly I'm kinda surprised there aren't handheld laser engraving devices made for quick and permanent graffiti.
There are abundant portable galvo head lasers out there. A lot of them targeting the hobby market, but also more powerful ones (that are less cheap) meant for marking or engraving parts in situ. Everlast now has a laser welder, too. I think it’s only a matter of time before we get cheaper cutter in the 1kw range.