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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Unopenable jam jar
I want to make an unopenable jam jar - one that will resist the
strongest grips. What's the best way to achieve this? I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. Daniele |
#2
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Unopenable jam jar
"D.M. Procida" wrote in message ... I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. Daniele Marmalade round the rim seems to work in our house. |
#3
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Unopenable jam jar
On Dec 12, 8:58*am, (D.M.
Procida) wrote: I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. Why the boiling water? Is that what you want it to be full of? I recall doing something like this once - can't remember why. I used Araldite and left the jar+lid in a recently-heated oven for faster/ stronger setting. It 'mostly' worked. But the Araldite didn't properly fully adhere to the glass and you could work the lid a little free. You might try something similar with epoxy resins designed for glass. Ah, I remember now - I was experimenting with making a cheapskate 'moneybox'! HTH J^n |
#4
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Unopenable jam jar
jkn wrote:
I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. Why the boiling water? Is that what you want it to be full of? That's just to create a vacuum effect on the lid, to help keep it closed. Daniele |
#6
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Unopenable jam jar
In article ,
David Hansen wrote: If you only want the contents and a proper jar opener will not shift it then drill a hole in the lid. If the jar has not been opened this will release the vacuum. If necessary the hole can be enlarged to remove the lid. You've just done what I almost did. ;-) -- *Why is the man who invests all your money called a broker? Dave Plowman London SW To e-mail, change noise into sound. |
#7
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Unopenable jam jar
On Dec 12, 11:18*am, M wrote:
Following up to Dave Plowman (News) If necessary the hole can be enlarged to remove the lid. You've just done what I almost did. ;-) well, its the obvious conclusion to jump to! No it isn't. The OP is perfectly clear. Hints of the DIY English thread? MBQ |
#8
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Unopenable jam jar
On Fri, 12 Dec 2008 11:02:55 +0000, David Hansen
wrote: On Fri, 12 Dec 2008 08:58:11 +0000 someone who may be (D.M. Procida) wrote this:- I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? Do you want the contents, or the jar and the lid and the contents? Has it already been opened? If you only want the contents and a proper jar opener will not shift it then drill a hole in the lid. If the jar has not been opened this will release the vacuum. If necessary the hole can be enlarged to remove the lid. David .Read the OP again slowly...LOL |
#9
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Unopenable jam jar
On Fri, 12 Dec 2008 11:02:55 UTC, David Hansen
wrote: On Fri, 12 Dec 2008 08:58:11 +0000 someone who may be (D.M. Procida) wrote this:- I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? Do you want the contents, or the jar and the lid and the contents? Has it already been opened? If you only want the contents and a proper jar opener will not shift it then drill a hole in the lid. If the jar has not been opened this will release the vacuum. If necessary the hole can be enlarged to remove the lid. Read the question. -- The information contained in this post is copyright the poster, and specifically may not be published in, or used by http://www.diybanter.com |
#10
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Unopenable jam jar
"David Hansen" wrote in message ... On Fri, 12 Dec 2008 08:58:11 +0000 someone who may be (D.M. Procida) wrote this:- I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? Do you want the contents, or the jar and the lid and the contents? Has it already been opened? If you only want the contents and a proper jar opener will not shift it then drill a hole in the lid. If the jar has not been opened this will release the vacuum. If necessary the hole can be enlarged to remove the lid. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 The poster is asking the opposite of what you have just answered ... |
#11
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Unopenable jam jar
On Fri, 12 Dec 2008 08:58:11 +0000,
(D.M. Procida) wrote: I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. Why? Someone can always smash it if they want to get it open. -- (\__/) M. (='.'=) Owing to the amount of spam posted via googlegroups and (")_(") their inaction to the problem. I am blocking most articles posted from there. If you wish your postings to be seen by everyone you will need use a different method of posting. See http://improve-usenet.org |
#12
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Unopenable jam jar
D.M. Procida wrote:
I want to make an unopenable jam jar - one that will resist the strongest grips. No such thing exists. You could make one that's very difficult to open, would that do? |
#13
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Unopenable jam jar
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#14
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Unopenable jam jar
In uk.d-i-y, D.M. Procida wrote:
I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. I'd remove the soft sealing ring from inside the lid, the use a good quantity of Araldite and cure it in the oven. -- Mike Barnes |
#15
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Unopenable jam jar
D.M. Procida wrote:
I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. Daniele I'm sure a suitable application of 'ki' would open it anyway Alan -- email =~ s/nospam/fudokai/ |
#16
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Unopenable jam jar
On Fri, 12 Dec 2008 13:39:06 +0000, ajp wrote:
D.M. Procida wrote: I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. Daniele I'm sure a suitable application of 'ki' would open it anyway That, or a couple of slaps with a bokken. Regards, -- Steve ( out in the sticks ) Email: Take time to reply: timefrom_usenet{at}gmx.net |
#17
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Unopenable jam jar
D.M. Procida wrote:
I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. Just in case anyone else requires an unopenable jam jar, I made one that so far has satisfactorily resisted all attempts to unscrew it. I roughed up the glass rim with sandpaper, and ran some superglue around it. Since that seems to do the job, I haven't felt the need to try any of the more ambitious methods suggested. Daniele |
#18
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Unopenable jam jar
On Thu, 1 Jan 2009 15:41:37 +0000, D.M. Procida wrote:
D.M. Procida wrote: I want to make an unopenable jam jar - one that will resist the strongest grips. What's the best way to achieve this? I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. Just in case anyone else requires an unopenable jam jar, I made one that so far has satisfactorily resisted all attempts to unscrew it. I roughed up the glass rim with sandpaper, and ran some superglue around it. Since that seems to do the job, I haven't felt the need to try any of the more ambitious methods suggested. All right, I've got to ask, why would you want an unopenable jam jar? -- The Wanderer I have seen the truth - it doesn't make sense |
#19
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Unopenable jam jar
The. Wanderer wrote:
All right, I've got to ask, why would you want an unopenable jam jar? To stop people nicking your jam, of course! |
#20
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Unopenable jam jar
The. Wanderer wrote:
Just in case anyone else requires an unopenable jam jar, I made one that so far has satisfactorily resisted all attempts to unscrew it. I roughed up the glass rim with sandpaper, and ran some superglue around it. Since that seems to do the job, I haven't felt the need to try any of the more ambitious methods suggested. All right, I've got to ask, why would you want an unopenable jam jar? http://groups.google.com/group/uk.d-...ead/1a4512b019 d1a3fb Daniele |
#21
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Unopenable jam jar
D.M. Procida wrote:
http://groups.google.com/group/uk.d-...4512b019d1a3fb Is there much point in posting a google groups link for a thread to the thread in question? |
#22
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Unopenable jam jar
Andy Burns wrote:
Is there much point in posting a google groups link for a thread to the thread in question? It might no longer be available on someone's news feed. Daniele |
#23
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Unopenable jam jar
On Thu, 1 Jan 2009 16:10:11 +0000, D.M. Procida wrote:
The. Wanderer wrote: Just in case anyone else requires an unopenable jam jar, I made one that so far has satisfactorily resisted all attempts to unscrew it. I roughed up the glass rim with sandpaper, and ran some superglue around it. Since that seems to do the job, I haven't felt the need to try any of the more ambitious methods suggested. All right, I've got to ask, why would you want an unopenable jam jar? http://groups.google.com/group/uk.d-...ead/1a4512b019 d1a3fb Ah, ok. I had to reinstall everything on my pc about a couple of weeks ago, and didn't bother downloading more than a 100 or so messages in each group when I was ready, so I missed the earlier part of the thread. -- The Wanderer I want to die how my Grandad died, peacefully, in his sleep, Not like his passengers, who were screaming and shouting! |
#24
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Unopenable jam jar
"M" wrote in message ... Following up to D.M. Procida I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. i would prefer araldite, can I ask why? Sounds like a Christmas trick to play on a brother or similar - "I bet I'm stronger than you", struggle, struggle, struggle, sleight of hand to swap to identical looking jar, Pop!, "That was easy" |
#25
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Unopenable jam jar
OG wrote:
"M" wrote in message ... Following up to D.M. Procida I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. i would prefer araldite, can I ask why? Sounds like a Christmas trick to play on a brother or similar - "I bet I'm stronger than you", struggle, struggle, struggle, sleight of hand to swap to identical looking jar, Pop!, "That was easy" Mate of mine (Mark, also a magician) used to do something similar with a sharpie marker. He would remove the cap & apparently place it on the other end of the pen. What actually happened was that he palmed the cap, and on the other end of the pen was a duplicate cap super glued in place. The unsuspecting punter would sign the playing card, then automatically try to replace the cap - which he couldn't. After a little humorous patter Mark would reverse the process and apparently re cap the pen. Very funny to watch :-) -- Dave - The Medway Handyman www.medwayhandyman.co.uk |
#26
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Unopenable jam jar
M wrote:
I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. i would prefer araldite, can I ask why? I want to use it to demonstrate a point about physiology and to show how - when making strenuous efforts against resistant physical objects - we typically contort our bodies in inefficient ways. It will spoil my demonstration if the jar can be twisted open easily. Daniele |
#27
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Unopenable jam jar
"D.M. Procida" wrote in message ... M wrote: I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. i would prefer araldite, can I ask why? I want to use it to demonstrate a point about physiology and to show how - when making strenuous efforts against resistant physical objects - we typically contort our bodies in inefficient ways. It will spoil my demonstration if the jar can be twisted open easily. Interesting, but is it true? I'd need some convincing that we would contort into a less efficient position when trying to increase effort. I'd be more inclined to concede that it might *look* like it's less efficient. For any given task (eg. jam jar opening), how would you determing the *optimum* method and decide what is less efficient? Tim |
#28
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Unopenable jam jar
Tim Downie wrote:
I want to use it to demonstrate a point about physiology and to show how - when making strenuous efforts against resistant physical objects - we typically contort our bodies in inefficient ways. It will spoil my demonstration if the jar can be twisted open easily. Interesting, but is it true? I'd need some convincing that we would contort into a less efficient position when trying to increase effort. I'd be more inclined to concede that it might *look* like it's less efficient. Most people trying to twist open a tight container will hold it towards their dominant side, a little below shoulder height, twisting their spine, neck and shoulders. I am convinced that the correct place is in one's centre, at about hip height, and that the twisting movement required can be generated at the hips. Funnily enough, AJP over there --- has guessed what it might be about; the demonstration is for an Aikido class. If you hang around with Aikido people you may notice that they have an uncanny knack of opening unopenable jam jars and other seized-up items, a knack that has nothing to do with strength or mystical powers but with body alignment. On a related note, one of our students - who is also studying for a degree in physiotherapy - said she got a funny look from one of the tutors on her course when she was handling a patient's limb. "Do you do Aikido, by any chance?" the tutor asked. And when she asked him how he could tell, he said "Because of the way you lined up all your bones." Daniele |
#29
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Unopenable jam jar
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#30
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Unopenable jam jar
Stephen Howard wrote:
Funnily enough, AJP over there --- has guessed what it might be about; the demonstration is for an Aikido class. If you hang around with Aikido people you may notice that they have an uncanny knack of opening unopenable jam jars and other seized-up items, a knack that has nothing to do with strength or mystical powers but with body alignment. In other words, give it some Nikkyo! Or is it Sankyo?? I think it's just walking, actually. Daniele |
#31
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Unopenable jam jar
On Fri, 12 Dec 2008 14:33:37 +0000, Stephen Howard wrote:
In other words, give it some Nikkyo! Or is it Sankyo?? Atemi! Atemi is 99% of Aikido. Oh, you wanted the pickles without broken glass? So sorry... I'd roughen the glass threads with sandpaper or a whetstone, degrease with alcohol, and use an epoxy. And a jar with a proper thread, not just those four ears bent over, no water or other filling. And maybe wrap the jar in tape, just in case it does break -- no glass shards on the mat or hand... Thomas Prufer |
#32
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Unopenable jam jar
D.M. Procida wrote:
Tim Downie wrote: I want to use it to demonstrate a point about physiology and to show how - when making strenuous efforts against resistant physical objects - we typically contort our bodies in inefficient ways. It will spoil my demonstration if the jar can be twisted open easily. Interesting, but is it true? I'd need some convincing that we would contort into a less efficient position when trying to increase effort. I'd be more inclined to concede that it might *look* like it's less efficient. Most people trying to twist open a tight container will hold it towards their dominant side, a little below shoulder height, twisting their spine, neck and shoulders. I am convinced that the correct place is in one's centre, at about hip height, and that the twisting movement required can be generated at the hips. Hmmm, what gives you this conviction? Ya see, if I was a betting man and had to choose between what "feels right" or someone's "idea" of what is the most efficient way, I'd plump for what "feels right" most of the time. How a person holds it may well be dependant on the strength of their "accessory" muscles, i.e. those that are brought into to play as "second line" help so to speak. People will vary in the strength of these muscles and their choice might just be a reflection of the strength these muscles. If you were to do a study with openable jars (or at least ones that could only be opened with a deal of difficulty), you might be able to show that one technique worked more often than another. Just observing how people attempt to open an unopenable jar doesn't really prove anything other than the fact that different people use different approaches. Tim |
#33
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Unopenable jam jar
Tim Downie wrote:
Interesting, but is it true? I'd need some convincing that we would contort into a less efficient position when trying to increase effort. I'd be more inclined to concede that it might *look* like it's less efficient. Most people trying to twist open a tight container will hold it towards their dominant side, a little below shoulder height, twisting their spine, neck and shoulders. I am convinced that the correct place is in one's centre, at about hip height, and that the twisting movement required can be generated at the hips. Hmmm, what gives you this conviction? Ya see, if I was a betting man and had to choose between what "feels right" or someone's "idea" of what is the most efficient way, I'd plump for what "feels right" most of the time. What feels right is learned. What's the right way to hold a pen, use a screwdriver, type on a keyboard, lift sleeping child or open a door? If you were to do a study with openable jars (or at least ones that could only be opened with a deal of difficulty), you might be able to show that one technique worked more often than another. Just observing how people attempt to open an unopenable jar doesn't really prove anything other than the fact that different people use different approaches. Except that certain ways of doing things are demonstrably stronger than others. Daniele |
#34
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Unopenable jam jar
D.M. Procida wrote:
If you hang around with Aikido people you may notice that they have an uncanny knack of opening unopenable jam jars and other seized-up items, a knack that has nothing to do with strength or mystical powers but with body alignment. That may be the answer - but I'm not convinced. I, and all the people I compete against, have no problems with jars etc. It isn't alignment, we know nothing special. It's just that many hours of holding onto a rope with high tension in it does a lot for the strength in your hands. I'm a dinghy sailor; it would be interesting to know if this was true of other sports and professions - for example, do brickies ever get stuck with jars? Andy |
#35
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Unopenable jam jar
In uk.d-i-y, D.M. Procida wrote:
M wrote: I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. i would prefer araldite, can I ask why? I want to use it to demonstrate a point about physiology and to show how - when making strenuous efforts against resistant physical objects - we typically contort our bodies in inefficient ways. You sound like the right sort of person to confirm or deny a pet theory of mine that's usually greeted with some scepticism. I believe that, all other things being equal, a left hander will find it easier to unscrew a difficult lid than a right hander. The body's geometry makes the right hand stronger turning clockwise[1], and the left hand stronger turning anticlockwise. Combine that with the left-hander having a stronger left hand due to greater use, and the result is clear. Even if this theory isn't true, explaining it lessens the embarrassment when people see how easy it is for me (left handed, of course) to open the jar they've been struggling with. [1] which is why the "right hand thread" became the norm, people attaching more importance to tightening than loosening -- Mike Barnes |
#36
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Unopenable jam jar
"Mike Barnes" wrote in message ... In uk.d-i-y, D.M. Procida wrote: M wrote: I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. i would prefer araldite, can I ask why? I want to use it to demonstrate a point about physiology and to show how - when making strenuous efforts against resistant physical objects - we typically contort our bodies in inefficient ways. You sound like the right sort of person to confirm or deny a pet theory of mine that's usually greeted with some scepticism. I believe that, all other things being equal, a left hander will find it easier to unscrew a difficult lid than a right hander. The body's geometry makes the right hand stronger turning clockwise[1], Thinking about it and being right handed I must admit when faces with such a jar I always tend to try using my left hand as it just seems easier that way. An old plastic container of PVA glue was the last time (not a jar) and I grabbed a pair of pliers in the end to get it undone. [1] which is why the "right hand thread" became the norm, people attaching more importance to tightening than loosening -- Mike Barnes |
#37
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Unopenable jam jar
On Fri, 12 Dec 2008 14:08:07 -0000, whisky-dave wrote:
Thinking about it and being right handed I must admit when faces with such a jar I always tend to try using my left hand as it just seems easier that way. Also being right handed(*) I pick up jars with my right hand then use my left on the lid. I take it this is what the OP means by using the left hand to open a jar? With a really recalcitrant jar I'll try with both ways round. As for the OPs qeustion, I'd go the Araldite route but degrease the jar and lid well first. Hot melt would set too quickly on the cold glass and lid. I guess if you got the jar and lid hot in a low oven then applied the goo you might be able to get it on before it set. (*) Mostly, knife and fork I'm left handed. Saves all that silly messing about swapping hands with the fork if only using a fork to eat with. -- Cheers Dave. |
#38
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Unopenable jam jar
On Dec 12, 12:56*pm, Mike Barnes wrote:
In uk.d-i-y, D.M. Procida wrote: M wrote: I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. i would prefer araldite, can I ask why? I want to use it to demonstrate a point about physiology and to show how - when making strenuous efforts against resistant physical objects - we typically contort our bodies in inefficient ways. You sound like the right sort of person to confirm or deny a pet theory of mine that's usually greeted with some scepticism. I believe that, all other things being equal, a left hander will find it easier to unscrew a difficult lid than a right hander. The body's geometry makes the right hand stronger turning clockwise[1], and the left hand stronger turning anticlockwise. Combine that with the left-hander having a stronger left hand due to greater use, and the result is clear. Even if this theory isn't true, explaining it lessens the embarrassment when people see how easy it is for me (left handed, of course) to open the jar they've been struggling with. [1] which is why the "right hand thread" became the norm, people attaching more importance to tightening than loosening But with a jam jar you can just as easily open it by twisting the jar clockwise with the right hand, rather than twisting the lid anti- clockwise. Like the Aikido thing, it's all about technique. MBQ |
#39
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Unopenable jam jar
In uk.d-i-y, Man at B&Q wrote:
On Dec 12, 12:56*pm, Mike Barnes wrote: In uk.d-i-y, D.M. Procida wrote: M wrote: I imagine that filling it up with boiling water, running a seam of superglue along the rim and thread then screwing the lid on tightly would get the best results. i would prefer araldite, can I ask why? I want to use it to demonstrate a point about physiology and to show how - when making strenuous efforts against resistant physical objects - we typically contort our bodies in inefficient ways. You sound like the right sort of person to confirm or deny a pet theory of mine that's usually greeted with some scepticism. I believe that, all other things being equal, a left hander will find it easier to unscrew a difficult lid than a right hander. The body's geometry makes the right hand stronger turning clockwise[1], and the left hand stronger turning anticlockwise. Combine that with the left-hander having a stronger left hand due to greater use, and the result is clear. Even if this theory isn't true, explaining it lessens the embarrassment when people see how easy it is for me (left handed, of course) to open the jar they've been struggling with. [1] which is why the "right hand thread" became the norm, people attaching more importance to tightening than loosening But with a jam jar you can just as easily open it by twisting the jar clockwise with the right hand, rather than twisting the lid anti- clockwise. Like the Aikido thing, it's all about technique. Whatever you do one hand is clockwise and the other anticlockwise. AFAICS the important hand is the one on the lid, which is relatively small and awkward to grip. Which is why, for a right hander, the best thing to do is to turn the jar upside down. And stop as soon as you sense the slightest movement! -- Mike Barnes |
#40
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Unopenable jam jar
In article , Mike Barnes
writes Which is why, for a right hander, the best thing to do is to turn the jar upside down. And stop as soon as you sense the slightest movement! In other words, hold the lid and twist the jar. I've told people having trouble pulling corks out of bottles to hold the cork and twist the bottle. They are so surprised when it works. |