the present invention discloses , in certain aspects , methods for removing material from ends of wires , the wires being electrical conductor wires of a coil for an electric motor , the ends of the wires projecting from the coil , the methods including : securing a holder apparatus to a coil , the coil having two portions projecting therefrom , each portion including a plurality of wire ends , each wire end having material thereon ; positioning the holder apparatus with the coil on a support , the support adjacent a blasting apparatus , the blasting apparatus including an enclosure ; moving the holder apparatus with the coil on the support thereby moving the wire ends into the enclosure ; and blasting the wire ends within the enclosure to remove the material from the wire ends . this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims , 37 c . f . r . 1 . 72 .