Demagnetize, lesson learned, good lesson.

Hi Crunchers,

I’ve been putting my automatics on the time grapher as I wear them lately. Today I’m wearing my CW C60 Pro 300, and tested it. Holy crap, +24sec a day, 0.5 beat error and 298 amplitude, those last two aren’t bad but when new it was +3, 0.0 and 300. 24+ is a deal breaker. I was mortified at such degradation on a watch that I’ve held in such high regard for workmanship and quality and the highly respected SW200-1 movement. I’m trying to decide if I need to send it back for service or warranty or just what.

Then I remembered, I have a cheap little demag machine! So I drag it out and demag it, twice, and low-and-behold….drum roll…+5, 0.0, 316!

Too many stray magnets in our modern world, the little buggers are everywhere just waiting to mess up you fine timepieces…. Or you can buy a Milgaus. (I know, they stopped making them but you can still get one.)

Reply
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I had the same happen to me.

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That's pretty horrific, assumed there's a higher degree of anti-magnetism in modern movements.

At least it's an easy fix, I'll check my Seiko's &

Ill stick to my very non magnetic Omega. 😉👍

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Inkitatus

That's pretty horrific, assumed there's a higher degree of anti-magnetism in modern movements.

At least it's an easy fix, I'll check my Seiko's &

Ill stick to my very non magnetic Omega. 😉👍

The standard antimagnetic movement is able to withstand something like a fridge magnet. They are antimagnetic, but not by much. Of course, lots of movements can handle more but that’s somewhat standard for modern mechanical movements.

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Wow! I’ll

Have to grab me a demagnetizer machine. Thanks for the heads up.

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I'm just waiting for my demag to arrive from Amazon 🤷‍♂

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Cell phones, tablets, PC's, etc are usually the biggest culprits. Especially when the watch head sits in close proximity over night for hours.

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I’ll have to grab on of these.

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Thanks for the tip! I was on the fence about getting a demagnetizer but now I’m on the prowl. 🕶️

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Exactly, you hear a lot the sentiment of “don’t worry about magnetism if you don’t work around an MRI”, but that’s definitely wrong.

As someone who did work on MRIs, ironically you don’t have to worry about a modern 3T MRI. Because if you made the mistake of going into the bore with a ferrous hairspring watch, it would not magnetize your watch, it would probably flat out mangle any ferrous hairsprings into clumps. In other words, you would notice. Because your watch won’t be magnetized, it will be broken.

Magnetization by our common everyday devices though - they are harder to notice. -10s here, +15s there - that’s what actually happens when you put your watch near the common magnets in tablets or laptops or phones. And yeah, if you’re someone who doesn’t notice +30s a day, then sure, you don’t have to worry about it. But it’s wrong to think that there is not a magnetization problem for ferrous hairsprings in this day and age.

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To all, I got the demag on Amazon and it was only $11.50. Well worth it.

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+24spd? That’s a mere blip!

This was my Baltic Aquascaphe earlier in the year (now back to +8spd after a demagnetizer like yours):