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In framing the question, I can't be more specific as I have no idea (though a suspicion) about what this came from.

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I have a number of them that are several different diameters from 125mm to about 300mm.

They are very thin steel (< 1mm) and each size came in a tight stack, as though laminated. They don't seem to have been glued together as they come apart easily. We have had them for about 20 years. Note the notch at 7 o'clock possibly to align or secure a stack.

I suspect they are part of some sort of electrical winding, but I would have thought they would have "teeth" on the outside.

Any ideas what they came from?

Nowadays they are part of an art project.

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Figure 1. Silicone steel stamped lamination, stator and rotor. Image source:HS Magnets

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Figure 2. On their way to becoming motors.

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  • $\begingroup$ Ahhh...as I suspected. Thanks! $\endgroup$
    – Steve
    Feb 7, 2021 at 23:15

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