Results 1 to 13 of 13
Like Tree3Likes
  • 2 Post By David King
  • 1 Post By rjb

Thread: Humbucker Magnets And Sources

  1. #1
    Junior Member DougGuy's Avatar
    Join Date
    Sep 2012
    Posts
    1

    Humbucker Magnets And Sources

    HI, I have used Dennis at AddictionFX for magnets, I was quite tempted to use some of Jon's magnets but the $15 per piece put me off. Now they are $28 each? Yikes..

    It is late 2017 now, and I would like to ask as to who you fellas like to get magnets from, if in the last several years have there been anything new added to the usual sources? Anything to particularly avoid or anything worth going out of one's way to get?

    I have used Mojotone for bobbins and baseplates, how are their magnets?
    Last edited by DougGuy; 09-25-2017 at 05:18 PM.

  2. #2
    rjb
    rjb is offline
    Old Timer
    Join Date
    Feb 2010
    Location
    Somewhere near Bawlmer, Merlin
    Posts
    2,156
    Check the "Stickies" in the Pickup Makers forum and sub-forums.

  3. #3
    Supporting Member
    Join Date
    May 2006
    Location
    PDX
    Posts
    3,179
    Try Steven Kersting's Pickup making components and pricing though he might have been one of the very first suppliers.

  4. #4
    ToneOholic! big_teee's Avatar
    Join Date
    Jun 2010
    Location
    Mid-South USA
    Posts
    9,778
    Technicians Run the World, but Bankers, Lawyers, and Accountants, Take All The Credit!
    Keep Rockin! B_T
    Terry

  5. #5
    Senior Member Jim Shine's Avatar
    Join Date
    Jan 2009
    Posts
    284
    Magnets are frustrating to me. I think many of these small suppliers are buying from the same places. I get funky magnets from time to time that have weird orientation. They sound like crap, so I toss them in a box..It sucks I have to have a box of unusable magnets.

    I would pay more if a vendor had strict quality control.

  6. #6
    Supporting Member mozz's Avatar
    Join Date
    Oct 2015
    Location
    NEPA
    Posts
    396
    Have you tried to remagnetize them?

  7. #7
    Supporting Member
    Join Date
    May 2006
    Location
    PDX
    Posts
    3,179
    Alnico pole orientation has to happen in the cool down phase at the foundry during the manufacturing process. Aside from "unoriented" alnico all alnico magnets have a predetermined orientation that you can't change after the fact.
    J M Fahey and kayakerca like this.

  8. #8
    Old Timer J M Fahey's Avatar
    Join Date
    Oct 2007
    Location
    Buenos Aires, Argentina
    Posts
    9,317
    True.

    I guess those poor quality ones are still oriented along the axis; if anything because itīs easier to do at the Factory, no matter how cheesy it might be.

    I would rather think they are partially demagnetized to various degrees, maybe because thay were randomly tossed in an old shoebox or something.

    Absolute best would be to measure them (if you have the proper tools) and *look* at the magnetic field to confirm the "random orientation" or not.

    Second best would be to assemble a pickup with them and give it a good magnetizing jolt ... if it markedly improves now you know.

    EDIT: http://www.coolmagnetman.com/magvisual.htm

    or
    this guy is a GENIUS:
    Juan Manuel Fahey

  9. #9
    rjb
    rjb is offline
    Old Timer
    Join Date
    Feb 2010
    Location
    Somewhere near Bawlmer, Merlin
    Posts
    2,156
    Quote Originally Posted by J M Fahey View Post
    this guy is a GENIUS:
    I've seen an Instructable for this before; the only innovation here is using a flat bottle.
    Just chopped strands of fine steel wool (which are said to align better than iron filings) in mineral oil.

    -rb

    PS - I guess there is some genius in knowing that rectangular bottles exist. The closest I was aware of would be hip flasks or maple syrup bottles.
    A quick search found this:
    https://www.amazon.com/H2GO-Flat-Bot...C8DW5QNX6A5R0Y
    Last edited by rjb; 10-16-2017 at 09:47 PM.
    J M Fahey likes this.

  10. #10
    Supporting Member mozz's Avatar
    Join Date
    Oct 2015
    Location
    NEPA
    Posts
    396
    I don't understand this. Predetermined orientation? Are all alnico rods magnets unoriented? I can't put a humbucker bar magnet in my magnetizer and change it polarity?

    Quote Originally Posted by David King View Post
    Alnico pole orientation has to happen in the cool down phase at the foundry during the manufacturing process. Aside from "unoriented" alnico all alnico magnets have a predetermined orientation that you can't change after the fact.

  11. #11
    Old Timer J M Fahey's Avatar
    Join Date
    Oct 2007
    Location
    Buenos Aires, Argentina
    Posts
    9,317
    You can magnetize Alnico (or ceramic or I guess most any other material) in any direction you wish, supposing your magnetizer is strong enough.

    The deal is that (Iīm talking ferrite ceramics because thats what I deal with everyday, I make speakers and have a powerful magnetizer) if you use the isotropic "same in all ways" material, meaning itīs just baked in the oven (or Alnico is molten in the kiln) and just let cool "as is" it can take magnetism in any direction, but you will get relatively poor results (say 2000/2500 Gauss) while if it cools under a strong magnetic field, its molecules get oriented and "stay there" .
    Then it will take (and keep) a stronger field in the preferred direction (anisotropic, meaning not the same in different directions) , some 4000 Gauss on ceramics, with correspondlingly poorer results everywhere else.
    Alnico numbers are way higher by the way.

    So in a nutshell: you can strongly magnetize along the axis, in either polarity; you still can magnetize, say, sideways, but results are poorer.

    I guess some rectangular magnets are made to be magnetized along the longer side, but blade pickups and such require it to be magnetized sideways, thatīs why you canīt use "just any bar magnet" you found somewhere and expect good results, it should be specifically made for this use.
    Juan Manuel Fahey

  12. #12
    Supporting Member mozz's Avatar
    Join Date
    Oct 2015
    Location
    NEPA
    Posts
    396
    Not to drag further off topic but now i will have to experiment with the rod magnets for strat pickups. Zap N-S, then measure, flip in magnetizer S-N, then measure again. I usually get slightly different readings on a set of 6 , but i based that on different lengths when making staggered pickups.

  13. #13
    Supporting Member
    Join Date
    May 2006
    Location
    PDX
    Posts
    3,179
    There should be little or no difference in flipping polarities 180š end for end on a rod magnet as that's how the internal crystalline structure is aligned. That said let us know if you do see a measurable difference upon re-magnetizing to saturation.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Multiple Magnets in a Humbucker.
    By RCI Guitars in forum Pickup Makers
    Replies: 22
    Last Post: 08-16-2012, 01:17 AM
  2. P90 vs Humbucker magnets
    By Meowy in forum Pickup Makers
    Replies: 4
    Last Post: 02-16-2008, 07:09 AM
  3. Humbucker magnets UK
    By pun15her in forum Pickup Makers
    Replies: 1
    Last Post: 08-14-2007, 09:07 PM
  4. Need humbucker covers quick...sources???
    By Possum in forum Pickup Makers
    Replies: 22
    Last Post: 10-16-2006, 07:14 PM
  5. humbucker magnets
    By franklin01 in forum Pickup Makers
    Replies: 6
    Last Post: 10-14-2006, 11:49 PM

Bookmarks

Posting Permissions

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