Replies to This Discussion

Permalink Reply by JL on April 21, 2017 at 1:22am

30 gague wire has 1 ohm per foot, 600 winds is probably in the neighborhood of 100 feet, so your multimeter should register about 100 ohms between your hot and earth lead out wires.

I think your problem is " I left one magnet attached to it, removed the plate from the other magnet and just snapped it ontop of the other"

the poles on those magnets are at the ends. Letting them snap together themselves means you have the N of one and the S of the other against each other. the fields are going just between the magnets and not out to your strings.

remove the second magnet, one of these should be enough. 

multi-magnet pickups have to have all the N poles pointing the same direction so as to not cancel each other out, which can be hard to force them to do since they tend to repell each other that way.

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Permalink Reply by Paul Craig on April 23, 2017 at 10:27am

Stacking magnets shouldn't be a problem. Each magnet has different pole on each side, so stacking a south pole(south on top north on bottom) on top of another south pole would be north on bottom of first attracting to south on top of the other that has north on it's bottom. So result would be S-N-S-N. Effectively becoming one magnet that's the same as a single magnet with South on top and North on bottom.

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Permalink Reply by JL on April 24, 2017 at 2:37am

stacking magnets pole to pole does make a bigger magnet, but these are bar magnets with the poles at the ends stacked side to side.  to make it a bigger magnet they need to be end-to-end like linked sausages.  stack them side they cancel because they have both a N and a S pole sticking out the same end of the coil.

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Permalink Reply by Paul Craig on April 24, 2017 at 9:13am

Gottcha. So would the use of a compass to determine the poles on the sides and then spinning the magnet around to match the side poles work?

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Permalink Reply by Paul Craig on April 24, 2017 at 9:17am

Maybe that would work, but it's a lot of trouble using multiple magnets stacked and better off using one magnet that's strong enough. you can always use a strong magnet to strengthen a weaker one, but that takes careful alignment of poles and time.

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Permalink Reply by Paul Craig on April 24, 2017 at 9:20am

I've been trying to strengthen some polymer magnets that I've stacked together to make a DeArmond Gold Foil type pickup for a month now. Not working well so far.

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Permalink Reply by JL on April 25, 2017 at 3:21am

For Brian, the hard drive magnets are plenty strong, use only 1.

for Paul I suspect those polymer magnets may have the poles somewhere other than you think.

for example, the craft store ceramic disk magnets for making your own refrigerator magnets have the poles to the sides of the disk, not to the faces.

A cheap cracker jack toy compass is all you would need to help you sort that out. 

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