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#1 |
"TRF" Member
Join Date: Sep 2009
Location: London
Posts: 16
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Demagnetising
Hi
My 116520 Daytona appears to be magnetised - it runs a bit fast, and both moves the needle of a compass (though only a very few degrees), and comes up as magnetised on the Lepsi app. Given current conditions, I'm not going to be able to get it to a watch shop, so I plan to buy a cheap generic demagnetiser from Amazon. My question is this. In all of the videos I've watched the watch is demagnetised by placing the watch case-back to the demagnetiser and lifting it away. I don't have a springbar tool, and don't want to remove the bracelet because I am concerned that I will drop a springier and damage the watch case. Is there any reason not to demagnetise the watch dial side down? Thanks |
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#2 | |
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Quote:
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ICom Pro3 All posts are my own opinion and my opinion only. "The clock of life is wound but once, and no man has the power to tell just when the hands will stop. Now is the only time you actually own the time, Place no faith in time, for the clock may soon be still for ever." Good Judgement comes from experience,experience comes from Bad Judgement,.Buy quality, cry once; buy cheap, cry again and again. www.mc0yad.club Second in command CEO and left handed watch winder ![]() |
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#3 |
"TRF" Member
Join Date: Sep 2009
Location: London
Posts: 16
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Fair comment, and I’m aware of the blue Parachrom hairspring. I’m timing it accurately and will revert, but I think it’s as much as 30 seconds to a minute a day. It had a full Rolex overhaul only a few months ago too.
No question that it moves the needle of a compass though - perhaps that isn’t of concern. |
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#4 |
TRF Moderator & 2024 SUBMARINER Patron
Join Date: May 2007
Real Name: Larry
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Magnetizing is the alignment of the electrons, causing a uniform field of flux.
A de-magnitizer simply pushes a stronger magnetic field into this aligned flux and causes it to re-scramble. It doesn't matter where that is coming from, so long as it is sufficiently strong enough to do the job.
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#5 | |
2024 ROLEX SUBMARINER 41 Pledge Member
Join Date: Mar 2017
Location: United States
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#6 |
TechXpert
Join Date: May 2012
Location: Earth
Posts: 23,565
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Depends on the type of demagnetiser, but yes one can magnetise a watch with a demagnetiser.
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#7 |
2024 ROLEX SUBMARINER 41 Pledge Member
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Real Name: Jocke
Location: Sweden
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Correct, if you don't pull the watch off the demagnetizer or releases the button before you pull the watch off it will be magnetized.
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#8 | |
"TRF" Member
Join Date: Sep 2009
Location: London
Posts: 16
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#9 |
Banned
Join Date: Dec 2019
Location: London
Posts: 978
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I have one of these and was optimistically hoping a watch was magnetised as it suddenly was running a bit fast. Unfortunately it wasn't magnetised :( boo.
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#10 |
2024 ROLEX SUBMARINER 41 Pledge Member
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Real Name: Eddie
Location: Australia
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I would not bother.
Based on your description I don't see a problem due to magnetism. In any event most of the cheap demagnetisers could do more harm than good in the wrong hands.
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#11 | |
"TRF" Member
Join Date: Jun 2018
Location: East Coast
Watch: 16610
Posts: 4,933
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Quote:
Yes it happens. Usually for me, running my arm too close to the magnetic strip in the refrigerator door while grabbing the milk. I bough a cheap demagnitizer for like 12 bucks and it gets my 16610 in working order. For what’s its worth, my 16610 runs +2/3 fast each day and closer to +8/10 when magnetized, so it’s not a massive difference as some here have mentioned. But If it was just serviced or recently, your AD can take a look. I had my 16610 serviced and then it started running fast, about 8 months later I brought it in. They looked at it and demagnetized it for me for free. Plus the hairspring on the Daytona should not be an issue, so couldn’t hurt to bring it back in. |
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#12 |
"TRF" Member
Join Date: Sep 2009
Location: London
Posts: 16
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So actually the watch isn't running very fast. It does move the compass though. I suppose I'd better live with that!
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#13 |
Banned
Join Date: Sep 2017
Location: 007
Posts: 327
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When demagnetizing, it does not matter how you put the watch on the demagnetizer, dial up or down.
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#14 |
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Join Date: Feb 2013
Real Name: Aaron
Location: New Hampshire USA
Watch: GMTII 116710
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#15 |
"TRF" Member
Join Date: Mar 2008
Location: MASSACHUSETTS
Posts: 895
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Sounds like you need to make a trip to RSC
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#16 |
"TRF" Member
Join Date: Sep 2009
Location: London
Posts: 16
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It would definitely go to Rolex but for the virus. That is why it won’t!
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#17 |
"TRF" Member
Join Date: May 2017
Real Name: Alan
Location: Northern, CA
Watch: 116334
Posts: 2,215
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The 116520 would have the 4130 movement which supposedly had the parachrom hairspring since 2000. If that's the case, then the watch shouldn't be effected by magnetism. The 116520 has been around since 2000 so if the watch hasn't been serviced, maybe just time for a service.
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#18 |
"TRF" Member
Join Date: Nov 2018
Real Name: Robert
Location: Toronto
Posts: 45
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Exactly. This ^^^
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- Robert TT 1973 DJ36 Silver 16013 SS 2019 DJ41 Blue 126334 |
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