Removing copper windings from an electric motor requires proper tools, technique, and patience. On this forum's search function, enter removing copper windings or similar language. There is plenty of information there. You'll have to see what works for you and if it's worth the effort to do so. Your technique and speed will improve with the more you do.
What I do is use an abrasive cut off wheel an cut the windings flush with the case at one end. You can also use a hammer and old wood chisel or a recipro saw to do the same. I prefer the cutoff wheel because it leaves a nice clean cut. Set the case in a vice or on top of a couple blocks of sorts. Than using a blunt punch or bolt and hammer, begin to progressively tap out the windings, going in a circular motion. The object here is to push out as a unit, rather than individually, until they are free, or able to be removed from the other end. Use pliers, grips, or pry bars/screwdrivers to free. TIP: Use a razor knife or similar and cut thru a good portion of the string on the windings before you begin. By the time you are done most of the string pieces will be laying on the floor. Less work. SAFETY INFO: dust mask, ear plugs, safety glasses, gloves at minimum should be used.
There are other ways, but this method works best for me. Small motors (house fans)are easier than larger motors, but bear less copper. Hope this helps.
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