How do you know if a demagnetizer works?
Like Tree3Likes

Thread: How do you know if a demagnetizer works?

Page 1 of 2 1 2 LastLast
Results 1 to 10 of 15
  1. #1
    Member OrangeOrange's Avatar
    Join Date
    Jan 2015
    Posts
    274

    How do you know if a demagnetizer works?

    I bought a demagnetizer and I tried to demagnetize a Raketa mechanical alarm clock. When I put the alarm clock near a compass, the needle is attracted to it. Both the north and south poles of the needles are attracted to it and neither are repelled. So does that mean the alarm clock is not magnetized? I did an experiment with the demagnetizer with a paper clip. The compass needle is attracted to the paper clip with both poles after using the demagnetizer. When I use a magnet to magnetize the paper clip or just leave it on the demagnetizer without slowing pulling it away, the paper clip will now only attract one pole of the compass and repel the other pole. I'm not sure how this works. I appreciate any help. Thanks!

  2. #2
    Member JacobC's Avatar
    Join Date
    Aug 2013
    Location
    Austin, TX
    Posts
    2,324

    Re: How do you know if a demagnetizer works?

    When you turn the demagnitizer on with a compass directly near it you should see the needle flail.

  3. #3
    Member OrangeOrange's Avatar
    Join Date
    Jan 2015
    Posts
    274

    Re: How do you know if a demagnetizer works?

    Quote Originally Posted by JacobC View Post
    When you turn the demagnitizer on with a compass directly near it you should see the needle flail.
    The needle doesn't flail, but it just snaps to the area in the middle of the square on the demagnetizer when I turn it on. I have one of those blue ebay demagnetizers. Like this one pictured here. Name:  watch-tool-demagnetizer.jpg
Views: 101
Size:  84.4 KB
    Last edited by OrangeOrange; April 14th, 2019 at 08:26.

  4. Remove Advertisements
    WatchUSeek.com
    Advertisements
     

  5. #4
    Member stolen-gmt-master's Avatar
    Join Date
    Mar 2018
    Location
    UTC-5, USA
    Posts
    467

    Re: How do you know if a demagnetizer works?

    There's a free app you can use instead of a compass: https://www.lepsi.ch/watch-demagnetizer/ .
    ------------------------------------

    (Almost) every watch a tool watch.

  6. #5
    Member Odessa200's Avatar
    Join Date
    Apr 2019
    Posts
    537
    The below blue box is nearly useless. There is no enough power in my experience. Return it if you can and get another one like this. Works great for me.
    Attached Images Attached Images


  7. #6
    Member NOTSHARP's Avatar
    Join Date
    May 2018
    Posts
    534

    Re: How do you know if a demagnetizer works?

    With my limited knowledge, I agree with Odessa200.


    I bought this to demagnetise some screwdrivers,





    When I checked the watch shown, it kicked the compass needle 20-25 deg. Two passes through the demagnetiser, and it no longer does.


    Screwdrivers are fine, too.








    Steve.

  8. #7
    Member Odessa200's Avatar
    Join Date
    Apr 2019
    Posts
    537
    The only shortcoming of this model is the size of the inner hole if you want to demilitarize a Vodolaz or similarly oversized watch. That does not fit. Pretty much everything else fits just fine.

  9. #8
    Member antilucem's Avatar
    Join Date
    Aug 2014
    Location
    SE Asia
    Posts
    777

    Re: How do you know if a demagnetizer works?

    I have both of the magnetizers discussed above and both work. The 'pass through' is better but requires another hand to press the button while the watch moves slowly through the loop as you hold it.

    The key is to repeat until compass needle is not deflected. Lift watch slowly away from the top of your blue machine until about 24" and then turn off. Repeat as necessary

    However, stop after about 30 seconds (overheat) and repeat again later.

    I have a 3133 which was difficult to demagnetize but I just kept going and now it is accurate to +1 second a day.

  10. #9
    Member vintorez's Avatar
    Join Date
    Apr 2018
    Location
    Western Australia
    Posts
    593

    Re: How do you know if a demagnetizer works?

    How much do these cost?

  11. #10
    24h
    24h is offline
    Member 24h's Avatar
    Join Date
    Nov 2017
    Location
    California
    Posts
    1,765

    Re: How do you know if a demagnetizer works?

    Pass through type definitely works better, and sometimes I feel as if the blue one either doesn't do anything or makes it worse.
    I don't own the pass through type, but I have used it in the past.

    Check eBay

    My YouTube Channel for watch modding and I​nstagram for (mostly) Russian watches

Page 1 of 2 1 2 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Similar Threads

    1. How do you know when you're hooked?
      By Wayne_G_I in forum Omega
      Replies: 26
      Last Post: August 21st, 2008, 05:35
    2. Replies: 11
      Last Post: June 10th, 2008, 00:25
    3. how do you know is fat lady?
      By gabrielego in forum Rolex & Tudor
      Replies: 3
      Last Post: June 5th, 2008, 21:26
    4. how do you know if your watch is fully wound?
      By nicholasmk in forum Sinn
      Replies: 5
      Last Post: February 15th, 2007, 17:48
    5. how do you know when the missus is serious
      By dingosrun in forum Casio G-Shock
      Replies: 8
      Last Post: July 31st, 2006, 17:19

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •