A friend just called from a store to ask what's the difference
(practically) between a cut resistance 8 versus 9 in a Master Padlock.
Two #9s are $19, while a similar set of four #8s for $25.
From a practical standpoint, do you have any experience to share
to help drive one to that type of decision?
Note: I will google but she's on the line now!
(and, I know nothing about this stuff)
I'd say the difference between an "8" cut resistance and a "9" cut
resistance is about half a minute. This web page from Master Lock
explains cut resistance:
'Master Lock - Choose the Best Padlock - Master Lock'
The thicker and harder the material the padlock shackle is made of, the
higher it's cut resistance. Less expensive padlocks will have thinner
shackles made of ordinary chrome plated steel. Better padlocks will
have thicker shackles made of much harder steels so they're more
resistant to being cut.
But, the bottom line is that if someone has an 24 Volt cordless angle
grinder fitted with a metal cutting abrasive disk, they're going to cut
through any shackle on any padlock within a few minutes at the most.
So, if all you have is a lawn mower in the shed, I'd say you should buy
a weather and corrosion resistant padlock to minimize the chances of it
rusting inside, and tho he11 with it's cut resistance because an angle
grinder will cut through any padlock shackle.
Far as I know, all the usual Master padlocks can be opened without
damaging the lock.
There are padlocks where the key can't be removed when the padlock is
open. Some or all of these are not subject to the same method of attack.
Before looking at a higher cut resistance lock, look at what it is locking.
It may be easier to cut the hasp than the lock.
One day at work I needed to get into a room that was locked with a padlock.
Could not cut the lock with some 3 feet long bolt cutters it was so
hardened. Moved to the side of the lock and cut the hasp very easy.
When people are trying to make things secure, there is so much over-looked.
For example, near my house someone has a very sturdy security door. I am
sure it would be very hard to break into it.
However directly next to their door is an unprotected window. It would
take a burglar 3 seconds to get into the house.
I was temped to put a sign on the door reading:
Door is locked,
Please enter through window.
It really gets down to how much noise they can make.
A battery operated side grinder will make short work of any padlock.
I also understand if you freeze one of those super hard locks, they
will shatter when you hit it with a hammer.
And how often do burglars try to shoot the lock off, not counting
They make inexpensive "cover"s that go over the top part of a disk
lock, you know, one that looks like a frisbee. I've never seen them
for sale but maybe on the web. My friend who ran a ministorage gave
me one. The lock can still be cut off with a angle grinder but it's
harder I think, and even harder to get bolt cutters in there.
Her ministorage had no security. Anyone could drive in anytime, day
or night, but burglaries were almost always by friends of the renters,
or cohorts in some illegal business like drugs. Total strangers
didn't come there to break into storage lockers. Maybe they know
thaty most contain mostly junk that people can't part with.
On Thu, 05 Dec 2013 19:36:10 -0500, gfretwell wrote:
I suspect most thieves will prefer not to make all that much noise.
And, I suspect whatever is fastest, and easiest to carry, is what
A 48" bolt cutter is probably fast and quiet though.
I only have a 24" bolt cutter (I needed to cut a chain on my
property when I bought the place); so I'm not sure what a 48"
one would do.
Would it basically open all the locks we'd normally buy?
On Fri, 6 Dec 2013 01:00:21 +0000 (UTC), Danny D'Amico
How thick, compared to the locks we'd normqaly buy, was the shackle
of the lock you cut open? Was it marked "hardened"? Was it a name
brand (meaning if they said hardened, it really was.)?
48" gives twice the pressure that 24 does. Maybe a lot more if it
opens so much wider that you get to use different muscles to close it.
But its jaws have to be as hard as the shackle. I don't think those
cheap Chinese bolt cutters, also about 24", I bought from JCWhitney
20 years ago were high quality. I bought them because they were so
BTW, can one un-harden a shackle by heating it with a propane or MAPP
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