Mechanical Sustainer With Spinning Magnets Project

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rat n' fuzz factory
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Mechanical Sustainer With Spinning Magnets Project

Post by rat n' fuzz factory » Thu Mar 28, 2024 3:03 pm

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Image


Hello everyone I thought I would share my experiment, amechanical sustainer device proto type. Works with wheel spinning a magnet exciting the strings into vibration.
3D printed, with height adjustment for spinning magnet wheel, with a speed controller for the motor.
Really interesting, not a Gizmo Tron, not an Ebow, not a Fernandes something else again.
See video for sounds.
https://www.youtube.com/watch?v=ZOQSg2GqX_g
This spinning magnet idea came from Koka Nikoleze and Mark Guitierrez

https://www.youtube.com/watch?v=hJHwhb99Bzo&t=553s

https://www.youtube.com/watch?v=7cn15xneIw8&t=582s

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Re: Mechanical Sustainer With Spinning Magnets Project

Post by OffYourFace » Thu Mar 28, 2024 8:06 pm

very cool, it's like instant flying saucer attack (the band)

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Re: Mechanical Sustainer With Spinning Magnets Project

Post by fuzzjunkie » Sat Mar 30, 2024 6:47 am

That’s interesting but it sounds like there’s a lot of variation and that it occasionally strikes the strings? Or that the strings vibrate so much that they strike the device?

Rather than those small, pill shaped magnets attached to a spinning disc, I would try bar magnets attached to a spinning drum. Something about the size of a lint roller or a little smaller. Alternating the poles of the bar magnets, and having an even number (8 or possibly 12 if depending on drum and magnet size) them equally spaced perpendicular to the strings. (A carbon fiber octagon tube would work for this)

If the bars aren’t a good option, the pill magnets (Neodymium?) could be arranged in a spiral arrangement around the drum. Similar to how the paper wraps around the drum of a paper towel or toilet paper roll. Say 12 magnets in 2 spiral patterns of 6, so that that 2 magnets interact with each string as the drum rotates.

Edit: using the smaller Neodymium magnets you could make the drum concave so it matches the arc of the fretboard and is more closely aligned with the strings.

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Re: Mechanical Sustainer With Spinning Magnets Project

Post by rat n' fuzz factory » Sat Mar 30, 2024 3:36 pm

Yeah the string gets pulled into the magnet when the width of vibration wide enough. The trick is to ride the speed to control to prevent this happening.
That's an interesting idea and the magnet would be approaching length ways rather than from the side, if that makes sense, so the sound and harmonics maybe different. I think one tiny pill neodymium per string on the bar would work. All my experiments with more than one magnet passing the strings has resulted in nothing, it kind of cancels itself out.

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Re: Mechanical Sustainer With Spinning Magnets Project

Post by Plumerai » Sat Mar 30, 2024 3:57 pm

fuzzjunkie wrote:
Sat Mar 30, 2024 6:47 am
That’s interesting but it sounds like there’s a lot of variation and that it occasionally strikes the strings?
I like the random variations & noises.

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Re: Mechanical Sustainer With Spinning Magnets Project

Post by fuzzjunkie » Sat Mar 30, 2024 4:00 pm

Plumerai wrote:
Sat Mar 30, 2024 3:57 pm
fuzzjunkie wrote:
Sat Mar 30, 2024 6:47 am
That’s interesting but it sounds like there’s a lot of variation and that it occasionally strikes the strings?
I like the random variations & noises.
It’s an interesting effect for sure. I think what I described would be more consistent and controlled.

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Re: Mechanical Sustainer With Spinning Magnets Project

Post by fuzzjunkie » Sat Mar 30, 2024 4:05 pm

rat n' fuzz factory wrote:
Sat Mar 30, 2024 3:36 pm
Yeah the string gets pulled into the magnet when the width of vibration wide enough. The trick is to ride the speed to control to prevent this happening.
That's an interesting idea and the magnet would be approaching length ways rather than from the side, if that makes sense, so the sound and harmonics maybe different. I think one tiny pill neodymium per string on the bar would work. All my experiments with more than one magnet passing the strings has resulted in nothing, it kind of cancels itself out.
That’s what I ended up thinking, that too many magnets would cancel out.

With a single spiral pattern around a cylinder or tube, I think you might actually get a arpeggio effect when the it was spinning slowly and more of a strum when spinning faster, up to a continuous pad at the fastest speed.

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Re: Mechanical Sustainer With Spinning Magnets Project

Post by interceptör » Sun Mar 31, 2024 6:58 am

I propose the Nobel prize for Weird'n'Cool be awarded to you, my good sir.

And just in case anyone missed, check out this other project of his: viewtopic.php?f=8&t=127865

BTW, am I seeing things or have you built your workshop into a caravan?

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Re: Mechanical Sustainer With Spinning Magnets Project

Post by Shadoweclipse13 » Mon Apr 01, 2024 9:04 pm

This is cool as hell. I would build one for the noise aspects alone :? Also, you should post a link somewhere for Simon The Magpie. That dude is all about noise stuff!!
Pickup Switching Mad Scientist
http://www.offsetguitars.com/forums/viewtopic.php?f=8&t=104282&p=1438384#p1438384

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Re: Mechanical Sustainer With Spinning Magnets Project

Post by Unicorn Warrior » Wed Apr 03, 2024 6:20 pm

Were you using any effects in the vid or was it purely guitar and strings?

Nevertheless, I want one

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