referring now to fig1 a ( and fig1 b and 1c ), a prior art coil c with two sides d , for use in an electric motor ( e . g . as part of a stator ) has a cable b with a multiplicity of enamel - covered wires w ( e . g . litz wire ) which are wrapped with insulation i . ends e of the cable c project from the coil c . in many cases enamel , originally covering the wires w , is removed from the ends e . fig2 a shows a coil holder 10 according to the present invention which has two interconnecting pieces 12 ( fig2 b , 2 d ) and 14 ( fig2 c , 2 e ). projections 12 a , 12 b and 12 c of the piece 12 fit between corresponding pairs of projections 14 a , 14 b and 14 c of the piece 14 . openings 16 are defined between the two pieces 12 , 14 within which can reside parts ( like the sides d , fig1 ) of a coil . the holder 10 may have any peripheral shape ( which is circular as viewed in fig2 a ), e . g . but not limited to square , rectangular , triangular , trapezoidal , elliptical , and oval . optional openings 18 , 19 define handles 18 a , 19 a , respectively , for facilitating coil handling , transport , and manipulation . the holder pieces 12 , 14 may be one integral piece or , as shown , may be made of multiple plates 12 p , 14 p , respectively , connected together , e . g . bolted together with bolts through holes 12 t , 14 t , respectively . fig3 a and 3b illustrate the installation of holders 10 on a coil c . as shown in fig3 a , the piece 14 is positioned with parts d of the coil c passing through the openings 16 . then , as shown in fig3 b , the projections of the piece 12 are inserted between the corresponding projections of the piece 14 and a bolt 14 s passing through holes 12 h and 14 h is used to bolt the pieces 12 , 14 together , securing the holder 10 around the coil c allowing limited movement of the coil with respect to the holders . fig4 a - 4c illustrate a vacuum maintenance structure , a plate 20 , according to the present invention which has two pieces 22 and 24 which can be taped , glued , and / or fastened together , e . g . with any suitable fastener , e . g ., but not limited to , staples , screws , releasable locking material , and / or hook - and - loop fastener material such as velcro ( trademark ) material ( see pieces of hook - and - loop fastener material 22 a , 24 a , fig4 a ). on one side of the structure 20 , ( a side which will contact an outer wall of a blasting apparatus around an opening through which a coil can pass ), there is , optionally , a piece of material 26 ( e . g . cloth , felt material , steel wool , carpet , outdoor carpet , rubber , or gasket material ; in one particular aspect , felt material about one - fourth of an inch thick ) which facilitates sealing of the structure 20 against the wall . in one aspect , the pieces 22 , 24 have magnets and / or tape for adhering contact with the enclosure wall . each piece 22 , 24 has recesses 22 d , 24 d respectively which define openings 28 for receiving side parts of a coil . fig5 illustrates the vacuum maintenance structure 20 in place on a coil c held together by tape 20 t . the coil parts are movable through the openings 28 ( e . g . making it possible , once a coil end is within an enclosure , to move the structure 20 on the coil so that the plate 20 and / or piece 26 sealingly contacts an outer wall of the structure ). fig6 a - 6d illustrate a coil support 30 according to the present invention which has a base 32 with legs 34 . a trolley 40 has rollers 44 rotatably connected to a base 42 . upwardly projecting edges 36 of the base 32 guide the rollers 44 and the trolley 40 . optionally , rollers 46 are rotatably mounted on and above the base 42 . as shown in fig6 a and 6b , the rollers 46 can be sized , configured , and positioned so that holders 10 are rotatably set thereon with some clearance n between the bottoms of the holders 10 and the top of the base 42 . this positioning of the holders 10 facilitates turning and manipulation of a coil on the rollers 46 and positioning and re - positioning of a coil &# 39 ; s wire ends with respect to and within a blasting apparatus &# 39 ; s enclosure . the prior art discloses a variety of blasting apparatuses , including but not limited to , those in u . s . pat . nos . 7 , 104 , 872 ; 6 , 712 , 677 ; 6 , 416 , 390 ; 6 , 099 , 395 ; 5 , 685 , 767 ; 5 , 460 , 564 ; 5 , 283 , 991 ; 5 , 216 , 849 ; 4 , 905 , 426 ; 4 , 798 , 027 ; 4 , 753 , 051 ; 4 , 741 , 130 ; 4 , 408 , 419 ; 4 , 339 , 897 ; 4 , 300 , 318 ; 4 , 233 , 785 ; 4 , 019 , 284 ; 3 , 516 , 205 ; 3 , 300 , 962 ; 2 , 584 , 647 ; 1 , 858 , 475 ; and 955 , 714 . fig7 a and 7b illustrate a blasting apparatus 50 according to the present invention which has an enclosure 52 ; legs 53 ; a viewing panel 54 ( e . g . made of clear glass or plastic ); hand insert holes 56 through which an operators hands may pass into the enclosure 52 ( hands , optionally , gloved ); vacuum system 59 ( shown in fig7 b ) for vacuuming cleaning particles and removed material and debris from within the enclosure ; and an opening 58 in a wall 57 through which an end of a coil can pass so that its wires &# 39 ; ends can be treated within the enclosure 52 . optionally , a light fixture 55 is included . optionally , as shown in fig7 c and 7d a material or structure may be used to close off the opening 58 while the coil is passing through the opening . this prevents blasting material and material removed from wire ends from exiting the enclosure 52 through the opening 58 . as shown in fig7 c brush or bristle material or fibers 62 connected to the wall 57 around the periphery of the opening 58 provides a barrier through which a coil is passable , yet which closes off the opening while the coil is present . the brush , fiber or bristle material is flexible so it abuts the coil and conforms to the coil shape substantially closing off the opening 58 with the coil present . a blasting fixture or “ gun ” 69 ( shown in fig7 b ) within the enclosure 52 is used by an operator to direct particles ( sand , beads , etc ) at the wire ends to remove wire coverings , e . g . enamel . optionally , as shown in fig7 d , a plurality of independent flaps 64 of flexible material are positioned in the opening 58 and a coil is passed between them , as they flex , into the enclosure 52 . fig7 e and 7f show other embodiments with multiple flaps . in fig7 e , four flaps 66 are used . in fig7 f , two flaps 68 , 69 are used with the flap 69 having two openings 69 a to accommodate parts of a coil with a coil end projecting into the enclosure 52 . fig8 a - 8c illustrate steps in a method according to the present invention . as shown in fig8 a , a coil c with ends e is secured to holders 10 which are resting on rollers 46 of a trolley 40 . the trolley 40 is on a support 30 adjacent a blasting apparatus 50 . the coil c is positioned so that its ends can be moved through the opening 58 into the enclosure 52 of the apparatus 50 . a vacuum maintenance structure 20 can be movably connected to the coil c or applied once the ends e are in the enclosure 52 . as shown in fig8 b , the coil ends e have been moved within the enclosure 52 by moving the trolley 40 and , if needed , by moving the coil c ( to the right as shown in fig8 b ) into the enclosure 52 . the structure 20 is placed sealingly against the wall 57 around the opening 58 ( see fig8 c ). blasting of the coil ends e with material removing particles commences . the coil c and thus its ends e within the enclosure 52 can be rotated by rotating the holders 10 on the rollers 46 to facilitate enamel removal from all surfaces of the wire ends e ( or ends are movable by repositioing holders with flat surfaces on the rollers 46 ). the wire ends can be rotated through a full 360 degrees , with the holders 10 rotating on the rollers 46 . the present invention , therefore , provides in some , but not in necessarily all , embodiments a method to remove material from ends of wires which are electrical conductor wires of a coil for an electric motor , the ends of the wires projecting from the coil , the method including : securing a holder apparatus to a coil having two portions projecting therefrom , each portion including a plurality of wire ends , the ends having material thereon ; positioning the holder apparatus with the coil on a support adjacent a blasting apparatus that includes 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 to remove the material from the wire ends . such a method according to the present invention may include one , or some , in any possible combination of the following : wherein the coil has two spaced - apart sides , and the holder apparatus is at least one holder , the at least one holder having two openings , one each of the two openings for receiving part of a side of the coil , the method further including emplacing part of each side in one of the two openings ; wherein the at least one holder apparatus is two matable parts combinable about the sides of the coil , the method further including combining the two matable parts about the coil so a part of each side of the coil is in one of the two openings ; wherein the two matable parts include a first part with projections and a second part with recesses , the method further including combining the two matable parts with each projection of the first part in a recess of the second part ; wherein the at least one holder has at least one cut out portion for facilitating handling of the holder ; wherein the at least one holder is two spaced - apart holders ; wherein the holder apparatus is generally round to facilitate rotation of the coil with respect to the support to rotate the coil ends within the enclosure ; wherein the support is a wheeled trolley positioned on a base , the base adjacent the enclosure of the blasting apparatus , the method further including moving the wire ends into the enclosure by moving the wheeled trolley on the base ; wherein the wheeled trolley has a plurality of spaced - apart rollers rotatably mounted thereon , the holder apparatus movably positioned on the plurality of rollers , the method further including moving the wire ends within the enclosure to facilitate removal of material therefrom by moving the holder apparatus on rollers of the plurality of rollers ; wherein the holder apparatus is two spaced - apart holders , the method further including moving each holder on two spaced - apart rollers of the plurality of rollers ; wherein the enclosure has a coil opening through which part of the coil is movable to move the wire ends into the enclosure , the method further including placing a seal structure at the coil opening and around the coil to seal off the coil opening while part of the coil is passing through the coil opening to facilitate the blasting of material off the wire ends ; and / or wherein the seal structure is seal apparatus connected to the enclosure or it is two seal pieces emplaceable on the coil , at least one of the two seal pieces having openings for accommodating parts of sides of the coil , the method further including emplacing the two seal pieces on the coil , and connecting the two seal pieces together . the present invention , therefore , provides in some , but not in necessarily all , embodiments a method to remove material from ends of wires , the wires comprising electrical conductor wires of a coil for an electric motor , the ends of the wires projecting from the coil , the method 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 ; wherein the coil has two spaced - apart sides , and the holder apparatus comprises two holders , each holder having two openings , one each of the two openings for receiving part of a side of the coil , the method further including emplacing part of each side in one of the two openings ; wherein each holder comprises two matable parts combinable about the sides of the coil , the method further including combining the two matable parts about the coil so a part of each side of the coil is in one of the two openings ; wherein each holder is generally round ; wherein the support comprises a wheeled trolley positioned on a base , the base adjacent the enclosure of the blasting apparatus , the method further including moving the wire ends into the enclosure by moving the wheeled trolley on the base . the present invention , therefore , provides in some , but not in necessarily all , embodiments a system 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 system including : a holder apparatus for securement to a coil , the coil having two portions projecting therefrom , each portion including a plurality of wire ends , each wire end having material thereon ; a support , the holder apparatus on the support , the support positionable adjacent a blasting apparatus , the blasting apparatus including an enclosure ; and the holder apparatus with the coil movable on the support to thereby move the wire ends into the enclosure . such a system according to the present invention may include one , or some , in any possible combination of the following : wherein the coil has two spaced - apart sides , and the holder apparatus is at least one holder , the at least one holder having two openings , one each of the two openings for receiving part of a side of the coil ; wherein the at least one holder apparatus is two matable parts combinable about the sides of the coil so a part of each side of the coil is in one of the two openings , the two matable parts including a first part with projections and a second part with recesses , each projection of the first part receivable in a recess of the second part ; wherein the support is a wheeled trolley positioned on a base , the base positionable adjacent the enclosure of the blasting apparatus , the wheeled trolley movable on the base to move the wire ends into the enclosure ; wherein the wheeled trolley has a plurality of spaced - apart rollers rotatably mounted thereon , the holder apparatus movably positioned on the plurality of rollers so that moving the holder apparatus on rollers of the plurality of rollers moves the wire ends within the enclosure to facilitate removal of material therefrom ; and / or wherein the enclosure has a coil opening through which part of the coil is movable to move the wire ends into the enclosure , the system further including a seal structure positionable at the coil opening and around the coil to seal off the coil opening while part of the coil is passing through the coil opening to facilitate the blasting of material off the wire ends ; wherein the seal structure is one of seal apparatus connected to the enclosure and two seal pieces emplaceable on the coil , at least one of the two seal pieces having openings for accommodating parts of sides of the coil . in conclusion , therefore , it is seen that the present invention and the embodiments disclosed herein and those covered by the appended claims are well adapted to carry out the objectives and obtain the ends set forth . certain changes can be made in the subject matter without departing from the spirit and the scope of this invention . it is realized that changes are possible within the scope of this invention and it is further intended that each element or step recited in any of the following claims is to be understood as referring to the step literally and / or to all equivalent elements or steps . the following claims are intended to cover the invention as broadly as legally possible in whatever form it may be utilized . the invention claimed herein is new and novel in accordance with 35 u . s . c . § 102 and satisfies the conditions for patentability in § 102 . the invention claimed herein is not obvious in accordance with 35 u . s . c . § 103 and satisfies the conditions for patentability in § 103 . this specification and the claims that follow are in accordance with all of the requirements of 35 u . s . c . § 112 . the inventor may rely on the doctrine of equivalents to determine and assess the scope of the invention and of the claims that follow as they may pertain to apparatus not materially departing from , but outside of , the literal scope of the invention as set forth in the following claims . all patents and applications identified herein are incorporated fully herein for all purposes . it is the express intention of the applicant not to invoke 35 u . s . c . § 112 , paragraph 6 for any limitations of any of the claims herein , except for those in which the claim expressly uses the words ‘ means for ’ together with an associated function . in this patent document , the word “ comprising ” is used in its non - limiting sense to mean that items following the word are included , but items not specifically mentioned are not excluded . a reference to an element by the indefinite article “ a ” does not exclude the possibility that more than one of the element is present , unless the context clearly requires that there be one and only one of the elements .