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Author Topic: can I tell visually if a p'up magnet is alnico or ceramic?  (Read 1816 times)

gwEm

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Just like the topic says ;) thanks!
Quote from: AndyR
you wouldn't use the meat knife on crusty bread but, equally, the serrated knife and straight edge knife aren't going to go through raw meat as quickly

FELINEGUITARS

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can I tell visually if a p'up magnet is alnico or ceramic?
« Reply #1 on: May 26, 2008, 01:44:06 PM »
Ceramic magnets are usually black whilst alnico ones are steel coloured if polished - not sure about unpolished though
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gwEm

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can I tell visually if a p'up magnet is alnico or ceramic?
« Reply #2 on: May 26, 2008, 02:27:41 PM »
thanks feline, maybe this is a polished alnico magnet in the V90...
Quote from: AndyR
you wouldn't use the meat knife on crusty bread but, equally, the serrated knife and straight edge knife aren't going to go through raw meat as quickly

WezV

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can I tell visually if a p'up magnet is alnico or ceramic?
« Reply #3 on: May 26, 2008, 02:45:47 PM »
you can test with a multimeter - alnico is conductive wheras ceramic isnt

FELINEGUITARS

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can I tell visually if a p'up magnet is alnico or ceramic?
« Reply #4 on: May 26, 2008, 03:20:09 PM »
Quote from: WezV
you can test with a multimeter - alnico is conductive wheras ceramic isnt


Good call!
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gwEm

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can I tell visually if a p'up magnet is alnico or ceramic?
« Reply #5 on: May 26, 2008, 03:34:37 PM »
definately alnico, unless what i think is the magnet is actually some sort of metal spacer. nice tip with the multimeter wez!! :)
Quote from: AndyR
you wouldn't use the meat knife on crusty bread but, equally, the serrated knife and straight edge knife aren't going to go through raw meat as quickly

WezV

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can I tell visually if a p'up magnet is alnico or ceramic?
« Reply #6 on: May 26, 2008, 03:37:09 PM »
thanks to some trading with ToneMonkey i happened to be reading through a copy of Jason Lollars pickup winding book yesterday

it has some handy hints on identifying magnets

WezV

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can I tell visually if a p'up magnet is alnico or ceramic?
« Reply #7 on: May 26, 2008, 03:37:46 PM »
Quote from: gwEm
definately alnico, unless what i think is the magnet is actually some sort of metal spacer.


er - obviously the other test - is it magnetic :P

gwEm

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can I tell visually if a p'up magnet is alnico or ceramic?
« Reply #8 on: May 26, 2008, 03:40:56 PM »
Quote from: WezV
Quote from: gwEm
definately alnico, unless what i think is the magnet is actually some sort of metal spacer.


er - obviously the other test - is it magnetic :P


:) :) cheers wez

well, its not the strongest magent thats for sure... however it is the thing lablelled "alnico V magnet" in this diagram... so i'm sure its the magnet... and i'm sure (now) its some sort of alnico. i don't know what strength.

the winding is 14k-ish - symmetric - its probably AV then.
Quote from: AndyR
you wouldn't use the meat knife on crusty bread but, equally, the serrated knife and straight edge knife aren't going to go through raw meat as quickly