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Felt Pen Marks on Pickup (Bar) Magnets

tybone

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Apr 26, 2009
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22
Hi Everyone, I have a quick question about marks on some pickup magnets.

I'm a mod my guitars a LOT and, while swapping out some '68 P-90's for Fralins I noticed that the magnets in the old pickups each had 2 black sharpie marks on the edge. Two days later, I'm putting a T-Top in different guitar and noticed that that magnet in that pickup had 3 pen marks on the edge.

My question is, are the marks indicating magnet type? i.e. 2 marks for A2 and 3 for A3?

Thanks for any clarity you can provide.

Larry
 

tybone

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Apr 26, 2009
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Confirmed sighting. I was looking at a P-100 and a T-Top and they both had bar magnets with 3 pen marks on it. I strongly suspect this is an alnico 3. I put one in a Burstbucker pro and it smooth out that nasty ass puppy quite well.

Case closed.
 

el84ster

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Sep 10, 2001
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1,397
No, pen marks on vintage pickup magnets were used to indicate the orientation so they didn’t screw things up. Used to indicate the north pole on a magnet. North goes toward the screw pole side on a humbucker.
 

el84ster

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Sep 10, 2001
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No, pen marks on vintage pickup magnets were used to indicate the orientation so they didn’t screw things up. Used to indicate the North Pole a magnet. North goes toward the slug pole side on a humbucker
 

tybone

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Apr 26, 2009
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No, pen marks on vintage pickup magnets were used to indicate the orientation so they didn’t screw things up. Used to indicate the North Pole a magnet. North goes toward the slug pole side on a humbucker
That kinda makes sense if not for the fact that the pen marks are on the long side of the pickup on the short side (poles). Sorry for the lack of clarity on my original post.

This is an alnico 3 magnet from a 80's T-Top.
 

Wilko

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Mar 11, 2002
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That kinda makes sense if not for the fact that the pen marks are on the long side of the pickup on the short side (poles). Sorry for the lack of clarity on my original post.
Yes, the long side with marks is north. The short sides are not the poles.
 

tybone

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Apr 26, 2009
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Yes, the long side with marks is north. The short sides are not the poles.
Thanks Wilko, I'm a little confused AND I don't have a compass. But confusion is the gateway to learning so thanks man.

magnet-16-v2.7bf2e6b.jpg
 

Wilko

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Thanks Wilko, I'm a little confused AND I don't have a compass. But confusion is the gateway to learning so thanks man.
that's not a gibson humbucker magnet.

here:

apiyonkwc__41332.1589369954.jpg
 

el84ster

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Sep 10, 2001
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Yeah, Gibson used a special magnet with poles oriented along the long sides.
 

TM1

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Jun 27, 2003
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Three marks do not denote what grade the Alnico is!
 
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